Starting implementation of sdf parser.
Merge branch 'origin/master'
Fix compiler error caused by last commit
Rename SDFParser to SdfParser.
Add benchmark.world (sdf)
Add sdfLoader app
Add sample sdf files
Fix SdfParser.
Use boost::token_compress_on in boost::split().
sdfLoader app loads double_pendulum.world
Merge branch 'origin/master'
Add double_pendulum_with_base.world
sdfLoader app loads double_pendulum_with_base.world
Comment that DART doesn't support plane shape yet
Merge pull request #98 from dartsim/sdf

Sdf
Fix bug that causes infinite loop in debug mode
Fix URDF loader. Works with refactored DART now.
Remove empty.txt in data directory.
Remove UtilsCode since we don't use it.
Rename GAZEBO_FORCEINLINE as FORCEINLINE