add travis

.travis.yml

@@ -0,0 +1,39 @@
+language: cpp
+cache:
+  - pip
+  - ccache
+  - yarn
+  - npm
+sudo: required
+dist: trusty
+
+os:
+  - linux
+
+env:
+  - JOB=test
+
+addons:
+  apt:
+    sources:
+      - ubuntu-toolchain-r-test
+    packages:
+      - gcc-5
+      - g++-5
+      - git
+      - python3
+      - python3-pip
+      - ccache
+
+before_install:
+  pip3 install xonsh
+
+script:
+  - gcc-5 --version
+  - g++-5 --version
+  - if [[ "$JOB" == "test" ]]; then /bin/bash ./tests.xsh; fi
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always