Test: Adds back stats test.
Code: Fixes condition.
Fix source map in stats test
Move source files to src/ and sass-spec to test/fixtures/spec
Merge pull request #498 from kevva/move-src

Move source files to src/ and sass-spec to test/fixtures/spec
Move sass.js into lib/index.js
Tweak package.json and remove unneeded files
Remove unneeded dependencies
Add source map stats test for `.render()`
Test: Adds back stats test.