Adding CONTRIBUTING.md Fixes #857
add missing carriage return
Updating formatting and wrapping
Update CONTRIBUTING.md

Removed unnecessary block of text relevant only to the wiki version.
Adding block for Pull Request context
Fixing new issues link
Clean up throttle tests
Check false positives when testing the value of `this`
Fix issue #472

This commit fixes #472 by replacing cssreset/cssfonts
dependency with cssnormalize.
Update request module and node engine requirements
Remove path.existsSync as part of node 0.8 minimum environment
Unit test for fixing Y.Object.keys() bug on Android
Modify native Object.keys test to deal with buggy Android implementation
Y.Object.keys() shim for Android 2.3.x and Opera. Fixes #658.
Added test for making sure prototypes aren't considered in hasNoKeys()
Uses Y.Object.keys() in YUITest.hasNoKeys(), to bypass Android 2.3.x faulty implementation. Fixes #658.
Uses Y.Object.keys() in YUITest.hasNoKeys(), to bypass Android 2.3.x faulty implementation. Fixes #658.
Minor fix for ObjectAssert tests.
Clarify use of non-native Y.Object.keys() shim
Adds additional documentation to _hasProtoEnumBug