Add Travis CI integration

Author: messense

.travis.yml

@@ -0,0 +1,24 @@
+sudo: required
+language: python
+python:
+  - "2.7"
+  - "3.5"
+  - "3.6"
+
+env:
+  - RUST_VERSION=nightly
+
+install:
+  - python -c "import sysconfig; print('\n'.join(map(repr,sorted(sysconfig.get_config_vars().items()))))"
+  - mkdir ~/rust-installer
+  - curl -sL https://static.rust-lang.org/rustup.sh -o ~/rust-installer/rustup.sh
+  - sh ~/rust-installer/rustup.sh --prefix=~/rust --spec=$RUST_VERSION -y
+  - export PATH="$HOME/rust/bin:$PATH"
+  - export PYTHON_LIB=$(python -c "import sysconfig; print(sysconfig.get_config_var('LIBDIR'))")
+  - export LIBRARY_PATH="$LIBRARY_PATH:$PYTHON_LIB"
+  - export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$PYTHON_LIB:$HOME/rust/lib"
+  - rustc -V
+  - pip install -e .
+
+script:
+  - cd example && python setup.py develop