buaazp: update travis.yml

[Release v2.2.0]buaazp: modify README.md

Merge branch 'dev' for v2.1.0

[bug fixed]buaazp: sprintf error in some platform. issue buaazp#12 & b…

…uaazp#17.

buaazp: modify README.

modify README.md

buaazp: modify readme.

buaazp: modify cmakelist.txt