fix linter errors and warnings

contracts/lifecycle/Pausable.sol

@@ -15,7 +15,7 @@ contract Pausable is Migratable, Ownable {
   bool public paused = false;
 
 
-  function initialize(address _sender) isInitializer("Pausable", "1.9.0-beta") {
+  function initialize(address _sender) isInitializer("Pausable", "1.9.0-beta")  public {
     Ownable.initialize(_sender);
   }
 

contracts/mocks/SafeERC20Helper.sol

@@ -21,11 +21,11 @@ contract ERC20FailingMock is ERC20 {
     return false;
   }
 
-  function balanceOf(address) public constant returns (uint256) {
+  function balanceOf(address) public view returns (uint256) {
     return 0;
   }
 
-  function allowance(address, address) public constant returns (uint256) {
+  function allowance(address, address) public view returns (uint256) {
     return 0;
   }
 }
@@ -48,11 +48,11 @@ contract ERC20SucceedingMock is ERC20 {
     return true;
   }
 
-  function balanceOf(address) public constant returns (uint256) {
+  function balanceOf(address) public view returns (uint256) {
     return 0;
   }
 
-  function allowance(address, address) public constant returns (uint256) {
+  function allowance(address, address) public view returns (uint256) {
     return 0;
   }
 }

contracts/ownership/Ownable.sol

 pragma solidity ^0.4.21;
 
-import 'zos-lib/contracts/migrations/Migratable.sol';
+import "zos-lib/contracts/migrations/Migratable.sol";
+
 
 /**
  * @title Ownable

contracts/token/ERC20/DetailedERC20.sol

 pragma solidity ^0.4.21;
 
 import "./ERC20.sol";
-import 'zos-lib/contracts/migrations/Migratable.sol';
+import "zos-lib/contracts/migrations/Migratable.sol";
+
 
 contract DetailedERC20 is Migratable, ERC20 {
   string public name;

contracts/token/ERC20/DetailedMintableToken.sol

@@ -4,8 +4,17 @@ import "zos-lib/contracts/migrations/Migratable.sol";
 import "./DetailedERC20.sol";
 import "./MintableToken.sol";
 
+
 contract DetailedMintableToken is Migratable, DetailedERC20, MintableToken {
-  function initialize(address _sender, string _name, string _symbol, uint8 _decimals) isInitializer("DetailedMintableToken", "1.9.0-beta") {
+  function initialize(
+    address _sender,
+    string _name,
+    string _symbol,
+    uint8 _decimals
+  )
+    isInitializer("DetailedMintableToken", "1.9.0-beta")
+    public
+  {
     DetailedERC20.initialize(_name, _symbol, _decimals);
     MintableToken.initialize(_sender);
   }

contracts/token/ERC20/DetailedPremintedToken.sol

@@ -4,8 +4,18 @@ import "zos-lib/contracts/migrations/Migratable.sol";
 import "./DetailedERC20.sol";
 import "./MintableToken.sol";
 
+
 contract DetailedPremintedToken is Migratable, DetailedERC20, StandardToken {
-  function initialize(address _sender, string _name, string _symbol, uint8 _decimals, uint256 _initialBalance) isInitializer("DetailedPremintedToken", "1.9.0-beta") {
+  function initialize(
+    address _sender,
+    string _name,
+    string _symbol,
+    uint8 _decimals,
+    uint256 _initialBalance
+  )
+    isInitializer("DetailedPremintedToken", "1.9.0-beta")
+    public
+  {
     DetailedERC20.initialize(_name, _symbol, _decimals);
 
     _premint(_sender, _initialBalance);

contracts/token/ERC20/MintableToken.sol

@@ -4,6 +4,7 @@ import "./StandardToken.sol";
 import "../../ownership/Ownable.sol";
 import "zos-lib/contracts/migrations/Migratable.sol";
 
+
 /**
  * @title Mintable token
  * @dev Simple ERC20 Token example, with mintable token creation
@@ -22,7 +23,7 @@ contract MintableToken is Migratable, Ownable, StandardToken {
     _;
   }
 
-  function initialize(address _sender) isInitializer("MintableToken", "1.9.0-beta") {
+  function initialize(address _sender) isInitializer("MintableToken", "1.9.0-beta")  public {
     Ownable.initialize(_sender);
   }
 

contracts/token/ERC20/PausableToken.sol

@@ -10,7 +10,7 @@ import "../../lifecycle/Pausable.sol";
  **/
 contract PausableToken is Migratable, StandardToken, Pausable {
 
-  function initialize(address _sender) isInitializer("PausableToken", "1.9.0-beta") {
+  function initialize(address _sender) isInitializer("PausableToken", "1.9.0-beta")  public {
     Pausable.initialize(_sender);
   }
 

contracts/token/ERC20/StandardBurnableToken.sol

@@ -3,6 +3,7 @@ pragma solidity ^0.4.18;
 import "./BurnableToken.sol";
 import "./StandardToken.sol";
 
+
 /**
  * @title Standard Burnable Token
  * @dev Adds burnFrom method to ERC20 implementations

contracts/token/ERC20/TokenTimelock.sol

@@ -3,6 +3,7 @@ pragma solidity ^0.4.21;
 import "./SafeERC20.sol";
 import "zos-lib/contracts/migrations/Migratable.sol";
 
+
 /**
  * @title TokenTimelock
  * @dev TokenTimelock is a token holder contract that will allow a
@@ -20,7 +21,15 @@ contract TokenTimelock is Migratable {
   // timestamp when token release is enabled
   uint256 public releaseTime;
 
-  function initialize(address _sender, ERC20Basic _token, address _beneficiary, uint256 _releaseTime) public isInitializer("TokenTimelock", "1.9.0-beta") {
+  function initialize(
+    address _sender,
+    ERC20Basic _token,
+    address _beneficiary,
+    uint256 _releaseTime
+  )
+    isInitializer("TokenTimelock", "1.9.0-beta")
+    public
+  {
     // solium-disable-next-line security/no-block-members
     require(_releaseTime > block.timestamp);
     token = _token;

contracts/token/ERC20/TokenVesting.sol

@@ -6,7 +6,7 @@ import "./ERC20Basic.sol";
 import "./SafeERC20.sol";
 import "../../ownership/Ownable.sol";
 import "../../math/SafeMath.sol";
-import 'zos-lib/contracts/migrations/Migratable.sol';
+import "zos-lib/contracts/migrations/Migratable.sol";
 
 
 /**

contracts/token/ERC721/MintableERC721Token.sol

@@ -3,11 +3,12 @@ pragma solidity ^0.4.21;
 import "./ERC721Token.sol";
 import "../../ownership/Ownable.sol";
 
+
 /**
  * @title Mintable ERC721 Token
  */
 contract MintableERC721Token is Migratable, Ownable, ERC721Token {
-  function initialize(address _sender, string _name, string _symbol) isInitializer("MintableERC721Token", "1.9.0-beta") {
+  function initialize(address _sender, string _name, string _symbol) isInitializer("MintableERC721Token", "1.9.0-beta")  public {
     Ownable.initialize(_sender);
     ERC721Token.initialize(_name, _symbol);
   }