improve the TLD with XSD format

Fixed dandelion/issues#36
Remove the doc module

The new documentation is now here :
http://dandelion.github.com/datatables/
Added a README
Update README.md
Merge pull request #1 from Sorceror/master

custom collumn rendering functionality
Added custom rendering for AJAX sources (JSP)
Fixed dandelion/issues#30
Fixed dandelion/issues#41
Fixed dandelion/issues#45

Cleaned POM
Cleaned code before releasing
Test log level now set to INFO
[maven-release-plugin] prepare release dandelion-datatables-0.8.7
[maven-release-plugin] prepare for next development iteration
Datatables properties are now loaded just one time

fixed dandelion/issues#44
Minor changes on README file
Added the maven failsafe plugin to handle IT tests
Updated tests

Renamed *Test in IT* to be handled by the failsafe plugin
New IT test
Configured failsafe plugin
Renamed integration tests
Added tests

New export tests
Added license in tests classes