Merge branch 'release/0.0.59' into develop
src: add instance method 'visit()'
test: add instance method 'visit()' testings
lint: add some files for linting pass
src: modify code for linting pass
readme: add instance method 'visit()' api
src: fix a mistake for nodejs v 0.10
travis: change retrying times to 5
travis: remove the item 'bundler_args'
npm: 0.0.59 -> 0.0.60
Merge branch 'release/0.0.60'