Basic Diff functionality.

Mildly tested.
Implemented in sbt with getDiff task, reads last dsl based on
testProject setting...
Basic Readme for sbt plugin

Using com.typesafe.config for Property loading.

Changed task names for managed projects.

Refectored config reading.
Published Snnapshot to Sonatype

Updated tests.

Replaced Ini for Props.

Expanded Readme.

Added root readme
Diff unmanaged will now be able to recognize an fresh database.

System test included.
Replaced Ini for Props in doc.