Refactor lookup command and partially fixed #72.
Fix sorting versions. Fix #60
travis debug
travis fix
Merge remote-tracking branch 'upstream/master'

Conflicts:
	tests/Bowerphp/Test/BowerphpTest.php
	tests/Bowerphp/Test/Package/LookupTest.php
	tests/Bowerphp/Test/Package/SearchTest.php