update
$ bower update <name> [<name> ..] [<options>]
Updates installed packages to their newest version according to bower.json.
update options
- 
-F,--force-latest: Force latest version on conflict - 
-p,--production: Do not install project devDependencies - 
-S,--save: Updatedependenciesin bower.json - 
-D,--save-dev: UpdatedevDependenciesin bower.json 
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