Package: Adds libsass.gyp to package.json.

Removes upload.js, since it should live in
node-sass-binaries repo.

Issue URL: #802.

package.json

 {
   "name": "node-sass",
-  "version": "3.0.0-beta.1",
+  "version": "3.0.0-alpha.1",
   "libsass": "3.2.0-beta.2",
   "description": "Wrapper around libsass",
   "license": "MIT",
@@ -33,6 +33,7 @@
     "bin",
     "binding.gyp",
     "lib",
+    "libsass.gyp",
     "scripts",
     "src"
   ],

scripts/upload.js

-/*!
- * node-sass: scripts/upload.js
- */
-
-require('../lib/extensions');
-
-var flags = require('meow')({ pkg: '../' }).flags;
-var eol = require('os').EOL,
-    fetchReleaseInfoUrl = ['https://api.github.com/repos/sass/node-sass/releases/tags/v',
-                           flags.tag ? flags.tag : require('../package.json').version].join(''),
-    file = flags.path ? flags.path : process.sass.binaryPath,
-    fs = require('fs'),
-    request = require('request'),
-    uploadReleaseAssetUrl = ['?name=', process.sass.binaryName].join('');
-
-/**
- * Upload binary using GitHub API
- *
- * @api private
- */
-
-function uploadBinary() {
-  if (!fs.existsSync(file)) {
-    throw new Error('Error reading file.');
-  }
-
-  var post = function() {
-    request.post({
-      url: uploadReleaseAssetUrl,
-      headers: {
-        'Authorization': ['Token ', flags.auth].join(''),
-        'Content-Type': 'application/octet-stream'
-      },
-      formData: {
-        file: fs.createReadStream(file)
-      }
-    }, function(err, res, body) {
-      if (err) {
-        throwFormattedError(err);
-      }
-
-      var formattedResponse = JSON.parse(body);
-
-      if (formattedResponse.errors) {
-        throwFormattedError(formattedResponse.errors);
-      } else if (res.statusCode > 399) {
-        throwFormattedError(formattedResponse);
-      }
-
-      console.log(['Binary uploaded successfully.',
-                   'Please test the following link before announcing it:',
-                   formattedResponse.browser_download_url].join(eol));
-    });
-  };
-
-  request.get({
-    url: fetchReleaseInfoUrl,
-    headers: {
-      'User-Agent': 'Node-Sass-Release-Agent'
-    }
-  }, function(err, res, body) {
-    if (err) {
-      throw new Error('Error fetching release id.');
-    }
-
-    var upload_url = JSON.parse(body).upload_url;
-    uploadReleaseAssetUrl = upload_url.replace(/{\?name}/, uploadReleaseAssetUrl);
-
-    console.log('Upload URL is:', uploadReleaseAssetUrl);
-
-    post();
-  });
-}
-
-function throwFormattedError(err) {
-  throw new Error([
-    'Error uploading release asset.',
-    'The server returned:', JSON.stringify(err)].join(eol));
-}
-
-/**
- * Run
- */
-
-console.log('Preparing to uploading', file, '..');
-uploadBinary();