First commit of develop branch.
Fixing capitalization issue.
Renamed Tests to tests
Adding tests folder.
Removing .DS_store file.
Removed some old comments.
Added unit tests for bymonth and bysetpos, and corrected issues found in the process.
Added ability to check if a date is valid or not.
Alpha version of version 2, lacking support for wkst and bysetpos
Added functionality for wkst and bysetpos
Added rrule parser, and unit tests
Default value for  should be monday
Changed README and added travis
Modified travis config to update composer
Added travis images to readme and fixed travis config for composer
Update Travis Configuration

Use the Composer `update` command instead of `install`, as this will install and/or update, whereas the `install` command will fail if the dependancies have already been installed.
Update Composer Configuration

Add author name, new composer identifier, tags, etc.
Update README

Add explaination of why this repository exists, that it's a fork of another even though GitHub doesn't say so, etc.
Update generateOccurences() in When\When.

Prevent the method from throwing an InvalidStartDate exception when the start date is not in the list of occurances.
Fix #4 (Issue)

Fixed the bug where the first occurrence after the start date (within the same month) would be skipped if using the `bysetpos` option.