Add background information to project README
Update README to use passive voice

Also remove 1st person references so README can apply to multiple forks.
Update README to note which branch work is done in

Also add note about needing unit tests.
Allow T_CONSTANT_ENCAPSED_STRING
Allow for tab indention in multi line function calls
Fix typo in README
Merge remote-tracking branch 'origin/master' into development

Conflicts:
	Sniffs/Functions/FunctionCallSignatureSniff.php
	Sniffs/XSS/EscapeOutputSniff.php