Add a python script test.py, which can be used to compile and run specified example of embarc_osp.
Add file examples.yaml as white-black list
Instead of using travis ci to deploy github pages, a cron task will use Jenkins to deploy github pages every day.
Gitlab CI no longer supported. Remove the related code.
Modify the build configuration file .travis.yml
a. Use python 3.7
b. Use gnu toolchain 2020.09
c. Set 7 jobs that run in parallel according to different platforms. Because the timeout is 50 minutes for public repository, 3 parallel jobs (emsk has 3 versions) are used to compile examples on emsk.