Merge pull request #27 from ToSa27/development

Improved documentation and usage of codebender for auto sketch compilation
Bugfixes and rewrite parts of code
Merge pull request #28 from Damme/MQTTGateway

Bugfixes and rewrite parts of code
Need to include MySensor.h for gateway examples to work in codebender.
Merge branch 'development' of https://github.com/mysensors/Arduino into development
Classify method.
Fix compiler error.
Merge pull request #3 from mysensors/development

Update with latest changes from MySensors/development