Removed submodules

The examples in the test/ folder rely on Composer rather than using
submodules anyway
Fixed the phpdoc and the CS
Regenerated the browser to apply the CS fixes
Fixed the generated phpdoc for methods returning an integer
Merge pull request #11 from stof/fix_phpdoc

Fix the phpdoc in the library
Merge pull request #10 from stof/remove_submodules

Removed submodules
Use POST (instead of GET) request for command data sending
Merge pull request #13 from aik099/use-post-request-fix

Use POST (instead of GET) request for command data sending
Merge remote-tracking branch 'upstream/master'