hide std-output in the preparational work of CI build
bump faraday to v0.8.9 in CI build
disable document generation for the depends package in CI build
do not notify via email when CI built successfully
limit clone depth in CI build
enable cache in CI build
decrease the clone depth limit to 1 in CI build
trace node_modules
cachineode_modules in CI build
fix cache config format in .travis.yml
remove node_modules in gitignore
update node_modules
bump fs-extra from 0.9 to 0.10.0 in pkg dependency
update node_modules after bump fs-extra
customize npm install script in CI build
fix format in .travis.yml

Conflicts:
	.travis.yml