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
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Merge pull request #2361 from thefuzzy0ne/fix/userguide

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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
Merge branch 'develop' of git://github.com/EllisLab/CodeIgniter into develop