Questions text added for rest the 11th chapter
Merge remote-tracking branch 'origin/chapter11' into develop

Conflicts:
	src/main/scala/chapter11/exc06/ASCIIArt.scala
	src/main/scala/chapter11/exc07/BitSequence.scala
	src/main/scala/chapter11/exc08/MatrixMxN.scala
	src/main/scala/chapter11/exc10/RichFile.scala