Merge pull request #4 from gladhorn/master

Fix warnings
Fix the non-developer build for pre-5.1 Qt5 versions
and add CONFIG += package option.
Compile with QT_NO_CAST_FROM_ASCII and friends

This should fix the remaining bytearray and string
cast warnings.
Merge pull request #11 from gladhorn/master

Compile with QT_NO_CAST_FROM_ASCII etc
Use Q_DISABLE_COPY
Merge remote-tracking branch 'origin/master' into dev

Conflicts:
	src/enginio_client/enginio_client.pro
	src/enginio_plugin/enginio_plugin.pro
Merge pull request #14 from gladhorn/merge-dev

Merge master->dev