Correct friend function declarations with default arguments
Merge pull request #19 from jensenb/fixFriendFunctions

Correct friend function declarations with default arguments
cmake: add support for LIB_SUFFIX cmake flag

Signed-off-by: Ruben Smits <ruben.smits@intermodalics.eu>
Added .travis.yml file for travis-ci support
Merge pull request #21 from traversaro/travisci

Added .travis.yml file for travis-ci support
Added Boost header path to KDL_INCLUDE_DIRS variable so that it is correctly exported for other libraries using kdl.
Merge pull request #22 from francesco-romano/master

Add Boost header path to KDL_INCLUDE_DIRS variable
velocityprofile: Support trap. velocity profile with velocity specification

Support a profile with a fraction of maximum velocity, instead of
a time, specification.
solvers: Update documentation and add degraded and undefined error codes to solver interface
solvers: Add missing return
solvers: Support changing internal parameters after construction of IKSolverVel_WDLS

Also removes an unnecessary pass-by-reference parameter.
solvers: Modify ChainJntToJacSolver to support calculating Jacobian in intermediate frames
solvers: Correctly return degraded error code if child solver indicates degraded solution in IKSolverVel_NR