Added usecases for scan tutorial
Merge branch 'master' of git://github.com/Theano/Theano into scan
Merge branch 'master' of git://github.com/Theano/Theano into scan
Adding test for scan and comments in the doc.
Merge branch 'master' of git://github.com/Theano/Theano into scan
Correction of the tutorial code.
Correction of the tutorial.
Corrected the documentation.
Merge pull request #1748 from laurent-dinh/scan

Added usecases for scan tutorial