Add readme for data
Add main contents in readme
Revert "Add readme for data"

This reverts commit 591fb521009ceb2c8a216e0b1483923aa130f9e8.
Add build and run section in readme.
Update thirdparty submodules
Update readme
Update readme
Merge pull request #2 from pah/master

Detect Linux OS, minor RapidJSON fix