Merge pull request #75 from Mobius5150/master

Fixing strict standards error in WP Coding Standards check.
Add prerequisites for unit tests

See #3
Add unit tests for session, mysql, and xml restricted commands
Add TravisCI build status to readme
Add TravisCI build status to the *right* readme
Add .sass-cache and .DS_Store to DirectoriesCheck
Update .travis.yml

add wp 3.7 and 3.8
Update .travis.yml

to support php 5.5
Merge pull request #82 from Ramoonus/patch-2

php5 support in travis-ci
Merge pull request #81 from Ramoonus/patch-1

Update .travis.yml
Merge pull request #80 from kovshenin/master

Add .sass-cache and .DS_Store to DirectoriesCheck
Add remaining restricted command unit tests
Add PHPShortTagsCheck unit tests
Fix quoting on PHP short tags error message to properly evaluate $filename variable
Upgrade PHP short tags to blocker
Add PHPShortTagsCheck to VIP review

Fixes #74