Add `script/env.sh` to the list of ignored files.

- The file is automatically generated by a build script in the OS X target.
Merge pull request #13 from rastersize/ignore-env-sh

Add `script/env.sh` to the list of ignored files.
mas_makeConstraints block returns array of installed MASConstraints, more tests
return installed constraints
(Shorthand) makeConstraints should return the installed constraints.
Merge pull request #16 from vascoorey/master

(Shorthand) makeConstraints should return the installed constraints.
(Shorthand) Forgot to change interface declaration.
Merge pull request #17 from vascoorey/master

(Shorthand) Forgot to change interface declaration.
v0.2.4
Merge branch 'master' of https://github.com/cloudkite/Masonry
Add newlines to the ends of the files to prevent warnings when GCC_WARN_ABOUT_MISSING_NEWLINE is turned on
Merge pull request #18 from shermanl/master

Add newlines to the ends of the files to prevent warnings when GCC_WARN_ABOUT_MISSING_NEWLINE is turned on
Added -isEqual: and -hash to MASViewAttribute
Fixed the tests failing on OS X
Added MAS prefix to macros, other formatting changes
Merge pull request #20 from CraigSiemens/master

Added -isEqual: and -hash to MASViewAttribute