Removed filemobile from copyright statement in LICENSE.

Fixed some grammar.
Merge branch '1.6' into 1.7

Conflicts:
	LICENSE
Merge branch '1.7' into 1.8
Merge branch '1.8'
Stream support in the Client. Fixes #320.
Merge branch 'master' of https://github.com/evert/SabreDAV into pullingToEvert

Conflicts:
	lib/Sabre/DAV/Client.php