Merge branch '1.6'

Conflicts:
	package/codecept.phar
	src/Codeception/Codecept.php
Added sendOPTIONS() and sendHEAD() to REST module
filtered stack traces | @depends
finally added claypit logs to ignore
Merge branch 'master' of github.com:Codeception/Codeception
Merge pull request #661 from blopboard/feature/missing-rest-methods

Added sendOPTIONS() and sendHEAD() to REST module
run default suite if no environments defined
Merge branch 'master' of github.com:Codeception/Codeception
improvments to pageobject
changes in docs
Update deps image
Merge pull request #664 from toopay/master

Update deps image
added environment annotation | refactored SuiteManager
added tests to environments
more tests for environemnt
Merge branch 'master' of github.com:Codeception/Codeception
reimplemented Symfony2 module fix
merged with 1.6
added webdriver restriction
Merge branch '1.7'