Merge pull request #11 from ablanco/master

Fix typo in kate_plugins.py Thanks!
Improve the json plugin and adapt the plugin to the last version of kate (1/02/2013)
Adapt the checkers plugins to the last Kate (2013/02/01), and fix a little error in the pep8 plugin
Adapt the block plugin to the last kate (01/02/2013)
Adapt the code to the three autocomplete plugins to the last kate (2013/02/01)
Adapt the configuration/settings/menu to the last Kate (2013/02/01)
New release
Details to the readme
Details to the readme
Details to the readme in pypi
Update the Copyright
Fix a typo error