Committed fix from https://github.com/tplaner/When/issues/5
Fix for origin issue: #8, FREQ=MONTHLY Rrule breaks.
Merge pull request #15 from deldreth/master

Issue #8, FREQ=MONTHLY Rrule not working
Merge pull request #7 from justinethier/master

Pull request for Issue #5 - Exception causing trouble in PHP 5.2.13
Changed readme to emphasize the develop branch.
Merge branch 'master' of github.com:tplaner/When
Merge branch 'release/0.4'

Conflicts:
	README.md
	Tests/When_Core_Test.php
	Tests/When_Daily_Rrule_Test.php
	Tests/When_Daily_Test.php
	Tests/When_Iterator_Test.php
	Tests/When_Monthly_Rrule_Test.php
	Tests/When_Monthly_Test.php
	Tests/When_Weekly_Rrule_Test.php
	Tests/When_Weekly_Test.php
	Tests/When_Yearly_Rrule_Test.php
	Tests/When_Yearly_Test.php
	When.php
Update README

Update the README to point to the correct TravisCI build status image (for the master branch).
Fixed TravisCI button