update gitignore
update to 1.4.1
Merge branch '1.4.1'
Merge branch '1.4.1'
Merge branch '1.4.1'
Merge branch '1.4.1'
Merge branch '1.4.1'
Merge branch '1.4.1'
Merge branch 'master' into 1.4.1
add bower package support