Merge commit '6bcd3e05'

* commit '6bcd3e05':
  build: Add support for travis CI
Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>

.travis.yml

+language: c
+sudo: false
+addons:
+  apt:
+    packages:
+      - yasm
+      - bc
+compiler:
+  - clang
+  - gcc
+cache:
+  directories:
+    - ffmpeg-samples
+script:
+  - mkdir -p ffmpeg-samples
+  - ./configure --samples=ffmpeg-samples --cc=$CC
+  - make -j 8
+  - make fate-rsync
+  - make check -j 8