Merge pull request #18 from alexist/master

Upgrading plugins version
Mantis #226 : src attribute should start with  $(PROVIDER{id})
#226 update include documentation
Merge branch 'master' of https://github.com/alexist/esigate
Merge pull request #19 from alexist/master

Mantis #226 : src attribute should start with  $(PROVIDER{id})
Merge remote-tracking branch 'upstream/master'
https://github.com/esigate/esigate/issues/20
Test randomly fails on slow system