Merge pull request #238 from graimundo/master

- Updated read me to inform that pull requests will also make the new plugin/version available in the marketplace website.
Update marketplace.xml
Merge pull request #239 from buggtb/patch-8

Update marketplace.xml
Added token replacement plugin
Update marketplace.xml
Merge pull request #240 from buggtb/patch-9

Update marketplace.xml
fixed saiku enterprise entry
 'New version of plugin metadata'
Merge pull request #242 from cdeptula/tokenreplacement

Added token replacement plugin
 'New version of plugin metadata'
 'New version of plugin metadata'
 'New version of plugin metadata'
Adding ftl plugin to marketplace
Merge pull request #244 from brosander/ftl-plugin

Adding ftl plugin to marketplace
- Changed schema so that category element in a market_entry element and the development stage element in a version element are mandatory/required
- Added missing development stages
- Added Community Level 3 development stage for Stable C-Tools versions for 4.X server