use NAN for Node 0.8->0.11+ compatibility

Applied #159 to the renderSync method

Fixes #182

Update libsass to cc595a8

Changed order of terminal commands for binaries rebuilding

You've to initialise and update submodules before running `npm install`, because it automatically runs building script.

Remove `map` from sourceComments options as it's not supported

https://github.com/andrew/node-sass/issues/141

added ENV option to skip the build tests

use a mocha reporter that doesn't blank the screen

Closes #174

add prefix to options to remove from path

Build: Add v8 specific platform builds

Idea courtesy of node-fibers.
When installing, check to see if there is a compatible binary version
for the current version of v8. v8 3.6 = Node 0.6, 3.11 = Node 0.8, 3.14
= Node 0.10. The test suite is run as well, so that any underlying
libsass breaks will be rebuilt.

Closes gh-146

Fixed #167 where multiple instances of Optimist would conflict.

I removed the export of the cli interface since there is no documentation of it, nor is it being used anywhere within the library. I think this is the best solution.

Reverted the render events to their original and adapted the test to avoid async race

Linked to the upstream issue with node-gyp and Windows in the readme

Added documentation for future build of the bindings in Windows

Fixed issue #155 and #156 by fixing the Visual Studio compile options

Fixed the test suite in Windows

Added safer path handling for Windows