Merge branch 'master' into devel

.travis.yml

+sudo: required
+dist: trusty
+
+language: cpp
+
+env:
+  - C_COMPILER=gcc-5 CXX_COMPILER=g++-5
+  - C_COMPILER=clang-3.8 CXX_COMPILER=clang++-3.8
+
+before_install:
+  - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
+  - wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | sudo apt-key add -
+  - echo "deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty-3.8 main" | sudo tee -a /etc/apt/sources.list
+  - sudo apt-get update -q
+  - sudo apt-get install gcc-5 g++-5 -y
+  - sudo apt-get install clang-3.8 -y
+  - sudo apt-get install libboost-all-dev libeigen3-dev libopencv-dev -y
+
+before_script:
+  - mkdir build
+  - cd build
+  - cmake -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${CXX_COMPILER} -DBUILD_EXAMPLES=on -DBUILD_UTILS=on ..
+
+script:
+  - make VERBOSE=1

README.md

 # eos: A lightweight header-only 3D Morphable Face Model fitting library in modern C++11/14.
-[![GitHub release](http://img.shields.io/github/release/patrikhuber/eos.svg?style=flat-square)][release]
+[![Latest release](http://img.shields.io/github/release/patrikhuber/eos.svg?style=flat-square)][release]
+[![Linux build status of master branch](https://img.shields.io/travis/patrikhuber/eos/master.svg?style=flat-square&label=Linux%3A%20build)][travis]
+[![Windows build status of master branch](https://ci.appveyor.com/api/projects/status/gekekpn08cdgqcsk/branch/master?svg=true&passingText=Windows%3A%20build%20passing&failingText=Windows%3A%20build%20failing&pendingText=Windows%3A%20build%20pending)][appveyor]
 [![Apache License 2.0](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat-square)][license]
 
 [release]: https://github.com/patrikhuber/eos/releases
+[travis]: https://travis-ci.org/patrikhuber/eos
+[appveyor]: https://ci.appveyor.com/project/patrikhuber/eos/branch/master
 [license]: https://github.com/patrikhuber/eos/blob/master/LICENSE
 
 eos is a lightweight 3D Morphable Face Model fitting library that provides just the bare minimum to load a model and perform camera and shape fitting. It's written in modern C++11/14.

appveyor.yml

+environment:
+  home: C:\projects
+  cmake: C:\projects\cmake-3.4.1-win32-x86\bin\cmake.exe
+
+version: '{branch}-{build}'
+
+os: Visual Studio 2015
+
+install:
+  # Get all submodules, since AppVeyor doesn't clone with '--recursive':
+  - cmd: git submodule update --init --recursive # inside the repository directory
+  # Get a recent CMake and our dependencies (Eigen, OpenCV, Boost):
+  - cmd: cd %home%
+  - ps: wget https://cmake.org/files/v3.4/cmake-3.4.1-win32-x86.zip -OutFile cmake.zip
+  - cmd: 7z x cmake.zip -o"C:\projects" -y > nul # will extract to cmake-3.4.1-win32-x86\
+  - cmd: '%cmake% --version'
+  # Get Eigen:
+  - ps: wget http://bitbucket.org/eigen/eigen/get/3.3-beta1.zip -OutFile eigen.zip
+  - cmd: 7z x eigen.zip -o"C:\projects" -y > nul
+  # Get OpenCV (my pre-built binaries for 2.4.12):
+  - ps: wget "https://drive.google.com/uc?export=download&id=0B2FFdHlMfJl_cW9PeUplRVFtUWs" -OutFile opencv-2.4.12-github-vc14-release-travis.rar
+  - cmd: 7z x opencv-2.4.12-github-vc14-release-travis.rar -o"C:\projects" -y > nul
+  # Using Boost 1.59.0 from AppVeyor (C:\Libraries\boost_1_59_0)
+
+before_build: # We're still in %home%
+  - cmd: mkdir build
+  - cmd: cd build
+  - cmd: '%cmake% -G "Visual Studio 14 Win64" -DOpenCV_DIR=C:\projects\opencv -DBOOST_ROOT=C:\Libraries\boost_1_59_0 -DBOOST_LIBRARYDIR=C:\Libraries\boost_1_59_0\lib64-msvc-14.0 -DEIGEN3_INCLUDE_DIR=C:\projects\eigen-eigen-ce5a455b34c0 -DCMAKE_INSTALL_PREFIX=..\install -DBUILD_EXAMPLES=on -DBUILD_UTILS=on ..\eos'
+
+build:
+  project: C:\projects\build\eos.sln
+
+after_build: # We're still in %home%\build
+  - cmd: '%cmake% --build . --target INSTALL --config Release'
+
+configuration:
+  - Release