integrate release 0.26 to master
Add powerStart, powerEnd for ShutdownableNodeModel. Not work yet
ShutdownableNodeModel worked
ShutdownableNodeModel worked
Merge remote-tracking branch 'origin/master'

Conflicts:
	choco/src/main/java/btrplace/solver/choco/actionModel/ShutdownableNodeModel.java
ShutdownableNodeModel worked
Merge pull request #4 from tudang/master

fixed ShutdownableNodeModel