Add directions for linking to CoreParse

Add directions for linking to CoreParse when not using CocoaPods.
Changing nuiClass after a control is moved to the window currently has no effect. This commit fixes this issue.
Merge pull request #200 from phatmann/patch-1

Add directions for linking to CoreParse
Merge pull request #201 from phatmann/apply-nui-class-change

Apply nuiClass change immediately
Merge pull request #202 from phatmann/fix-io7-deprecation-in-uitabbaritemrenderer

Fix iOS7 deprecation in NUITabBarItemRenderer
Merge pull request #203 from phatmann/media-queries

Media queries
Version 0.5.0
The fix for applying a nuiClass when it is changed has problems. This commit reverts the fix.

The problem is that with this fix calling setNuiClass causes the styles to be applied right away instead of during didMoveToWindow. This could break many controls.

This reverts commit 994166ea275669d773643455b1d6a322b2f2f9d3.
Merge branch 'master' of https://github.com/tombenner/nui
Merge branch 'revert-apply-nui-class-change'