Merge pull request #40 from nicolaje/master

Implemented ellipse drawing [C++ API]
Merge pull request #41 from nicolaje/master

Box clouds and compilation with -fPIC on Linux
Comment CMakeLists.txt
Merge branch 'master' of https://github.com/ENSTABretagneRobotics/VIBES
Added classes to support extensible property setting in the C++ Vibes API.
Add a simple test of property list system to all_commands.cpp
Merge pull request #42 from dvinc/master

Property list system in C++ API (still has to be added to drawing functions)
API breaking change. Implementation of Vibes params system in the drawBox function. Still needs to be implemented in other functions.
Orientation should be a number, not an array in ellipse drawing
messages.
Simplified C++ API code for variadic functions, and added convenience
macros for Matlab-style arguments passing.
Added axisAuto and axisLimits functions in C++ API.
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Update .travis.yml
Working .travis.yml (cleaned up)

Problem was that Travis-CI boxes are 64 bit, and 32 bit libs were not installed.
Fixed by installing libc6:i386 before running CMake.
Merge pull request #43 from dvinc/master

C++ API: Parameters system. Optional parameters to drawing functions. Axis control functions.
Merge pull request #44 from dvinc/travis-ci-test

Make Travis-CI successfully download and use CMake 2.8.12 (fixes #19). .travis.yml sections reorganized.