Adding files for debian packaging
Add Eigen include directory to DARTConfig.cmake
Use BUILD_SNOPT option to conditionally compile snopt code files.
Change the method applying joint damping force from explicit to implicit way for Featherstone method.
Merge branch 'origin/implicit_joint_damping'
Build shared libraries by default and give user an option (except on Windows)
Merge branch 'master' of github.com:dartsim/dart
Add version to library and package names. Add core dev package.
Fix last commit
Add CMake config file for DART Core.
Fix previous commit
Use BUILD_ROBOTICS option to build full dart suite

If BUILD_ROBOTICS is false, then only build dart_core. This
reduces the number of dependencies.
Fix previous commit
Change CMake option BUILD_ROBOTICS to BUILD_CORE_ONLY
Change install path for cmake config files to share/dartcore
Add nan value checking assertions to BodyNode
Fix install location of core CMake files in debian control files
Switch to github repos for urdfdom and urdfdom_headers
Merge pull request #120 from dartsim/urdfdom_github

Switch to github repositories for urdfdom and urdfdom_headers
Update .travis.yml

Split Travis test execution into combination of debug/release and core_only on/off.