Added Mac Framework build target.
Make all header files public, which is probably unnecessary.
Include DTCoreText.h in Mac Framework build target.
Update DTFoundation to latest.
Merge pull request #239 from newspaperclub/mac-framework

Added Mac Framework build target
Correct image size of local images if one dimension of display size is missing.

Previously if either width or height was missing then the original image size was used. Now the missing dimension is scaled proportionally. Closes #235
url encode src attributes
Modified the Readme.markdown to have more clear submodule instructions, removing unnecessary steps.
Step clarification and markup additions
Readme updates
HR background color fix
Fixing building for 10.7 SDK.
Cleaning up comments.
Fixing unit test on iOS 5.1.
Merge remote-tracking branch 'refs/remotes/giladno/master'
Merge remote-tracking branch 'refs/remotes/alunsford3/master'
Merge pull request #247 from JanX2/master

Collected fixes and improvements
Merge pull request #242 from TackMobile/url_encode_src_attributes

URL encode src attributes
Improving comments.
Cleanup.