add pipeline
format
go fmt
Merge pull request #107 from longbai/pipeline

add pipeline
update test key
Merge pull request #109 from longbai/pipeline

update test key
Update README.md
Update README.md
add mime type change
fixed compile
rename
fixed test
fixed mime
fixed mime encode
Merge pull request #111 from longbai/change-mime

add mime type change
remove trunked
add test
add comment
Merge pull request #112 from coaku/b_xzk_remove_chunked

B xzk remove chunked
fix checkcrc