Fix for issue #2236
reverted changes from previous commit
Fixed #2289
Merge branch 'develop' of git://github.com/EllisLab/CodeIgniter into develop
Added array notation for keys in Input library
Removed entry for erroneous bugfix
Removed $recurse parameter in lieu of auto parsing. Changed "provision" entry.
Changed "else if" to "elseif"
Simplified notation parsing and other cosmetic fixes
Code fixes in line with suggestions
Code style fix
Merge pull request #2348 from nisheeth-barthwal/feature/nested_keys

Added Parsing Capabilities to Input class for nested array keys