Merge pull request #44 from thedrow/patch-2

Test with latest PyPy in Travis

.travis.yml

@@ -8,8 +8,22 @@ python:
   - '2.7.11'
   - '2.6'
   - '3.4'
+  - 'pypy'
 
 install:
+- |
+    if [ "$TRAVIS_PYTHON_VERSION" = "pypy" ]; then
+      export PYENV_ROOT="$HOME/.pyenv"
+      if [ -f "$PYENV_ROOT/bin/pyenv" ]; then
+        pushd "$PYENV_ROOT" && git pull && popd
+      else
+        rm -rf "$PYENV_ROOT" && git clone --depth 1 https://github.com/yyuu/pyenv.git "$PYENV_ROOT"
+      fi
+      export PYPY_VERSION="5.3"
+      "$PYENV_ROOT/bin/pyenv" install --skip-existing "pypy-$PYPY_VERSION"
+      virtualenv --python="$PYENV_ROOT/versions/pypy-$PYPY_VERSION/bin/python" "$HOME/virtualenvs/pypy-$PYPY_VERSION"
+      source "$HOME/virtualenvs/pypy-$PYPY_VERSION/bin/activate"
+    fi
 - pip install -r requirements.txt
 - pip install -r requirements-dev.txt