Add Travis CI

.pre-commit-config.yaml

+-   repo: https://github.com/PaddlePaddle/mirrors-yapf.git
+    sha: 0d79c0c469bab64f7229c9aca2b1186ef47f0e37
+    hooks:
+    -   id: yapf
+        files: \.py$
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    sha: a11d9314b22d8f8c7556443875b731ef05965464
+    hooks:
+    -   id: check-merge-conflict
+    -   id: check-symlinks
+    -   id: detect-private-key
+        files: (?!.*paddle)^.*$
+    -   id: end-of-file-fixer
+        files: \.md$
+    -   id: trailing-whitespace
+        files: \.md$
+-   repo: https://github.com/Lucas-C/pre-commit-hooks
+    sha: v1.0.1
+    hooks:
+    -   id: forbid-crlf
+        files: \.md$
+    -   id: remove-crlf
+        files: \.md$
+    -   id: forbid-tabs
+        files: \.md$
+    -   id: remove-tabs
+        files: \.md$

.travis.yml

+language: cpp
+cache: ccache
+sudo: required
+dist: trusty
+services:
+  - docker
+os:
+  - linux
+env:
+  - JOB=PRE_COMMIT
+
+addons:
+  apt:
+    packages:
+      - git
+      - python
+      - python-pip
+      - python2.7-dev
+  ssh_known_hosts: 13.229.163.131
+before_install:
+  - sudo pip install -U virtualenv pre-commit pip
+  - docker pull paddlepaddle/paddle:latest
+
+script:
+  - exit_code=0
+  - .travis/precommit.sh || exit_code=$(( exit_code | $? ))
+  - docker run -i --rm -v "$PWD:/py_unittest" paddlepaddle/paddle:latest /bin/bash -c
+    'cd /py_unittest; sh .travis/unittest.sh' || exit_code=$(( exit_code | $? ))
+  - |
+    script/deploy_doc.sh
+
+notifications:
+  email:
+    on_success: change
+    on_failure: always

.travis/precommit.sh

+#!/bin/bash
+function abort(){
+    echo "Your commit not fit PaddlePaddle code style" 1>&2
+    echo "Please use pre-commit scripts to auto-format your code" 1>&2
+    exit 1
+}
+
+trap 'abort' 0
+set -e
+cd `dirname $0`
+cd ..
+export PATH=/usr/bin:$PATH
+pre-commit install
+
+if ! pre-commit run -a ; then
+  ls -lh
+  git diff  --exit-code
+  exit 1
+fi
+
+trap : 0

.travis/unittest.sh

+#!/bin/bash
+
+abort(){
+    echo "Run unittest failed" 1>&2
+    echo "Please check your code" 1>&2
+    exit 1
+}
+
+unittest(){
+    if [ $? != 0 ]; then
+        exit 1
+    fi
+    find "./ppdet/modeling" -name 'tests' -type d -print0 | \
+        xargs -0 -I{} -n1 bash -c \
+        'python -m unittest discover -v -s {}'
+}
+
+trap 'abort' 0
+set -e
+
+# install python dependencies
+if [ -f "requirements.txt" ]; then
+    pip install -r requirements.txt
+fi
+export PYTHONPATH=`pwd`:$PYTHONPATH
+
+unittest .
+
+trap : 0