Add reference to PSR-3 for use of constants
Merge pull request #124 from wilsonge/logreadme

Add reference to PSR-3 for use of constants [ci skip]
Fixed bug
Fixed useless casting
Removed unreachable statement
Removed unreachable statement
Fixed typos
Merge pull request #125 from pborreli/typos

Fixed typos and minor bugs
Merge branch 'master' of git://github.com/joomla/joomla-framework into Github

Conflicts:
	src/Joomla/Github/Github.php
Fix some doc blocks