Add the ability to specify multiple specification files/scenarios with maven

[kashishm]

The following command works for single specs dir/file. But there is no way to specify multiple dirs/files using -DspecDir flag.

mvn gauge:execute -DspecsDir=specs/example.spec

[bkim54]

+1 this would be nice because gauge provides this feature

[mahendrakariya]

Fix should be available in plugin v1.2.0

[sswaroopgupta]

@mahendrakariya : what would be the syntax? Should we also consider updating the documentation for this?

[mahendrakariya]

Multiple specs dir should be separated by spaces, the same as you do for gauge command on console.

<specsDir>specs1 specs2 specs3/foo.spec</specsDir>