Add a header in a folder named "framework".

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# Author:    Vincent Isambart <vincent.isambart@gmail.com>
# Date:      Mon Jun 29 08:56:04 2015 +0900
#
# On branch master
# Changes to be committed:
#	modified:   BananaLib.podspec
#	new file:   framework/Source/MoreBanana.h
#
