correct the spelling of Transaction
Merge branch 'MAID-300_correct_spelling_of_Transaction' of github.com:maqi/MaidSafe-Common into MAID-300

Conflicts:
	include/maidsafe/common/sqlite3_wrapper.h
Merge pull request #55 from benjaminbollen/MAID-300

MAID-300_correct_spelling_of_Transaction
fixes a typo