Install cffi>=1 on travis

Sheeo · Sheeo · commit f28a19935113 · 2015-08-28T19:51:39.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -12,7 +12,7 @@ env: LIBGIT2=~/libgit2/_install/ LD_LIBRARY_PATH=~/libgit2/_install/lib
 
 before_install:
   - sudo apt-get install cmake
-  - pip install cffi
+  - pip install 'cffi>=1.0.0'
   - "./.travis.sh"
 
 script:
