add methods of groups and tape
added class to hold a dialogue between the server and the client. added to the result of http request and response headers
fix bug get current user data
fixed a bug that occurs when no request
add submodule api-client
add info of install package
redid the client to use a package from the submodule
chenge code format. move template in a separate file
Merge pull request #2 from peter-gribanov/master

request accept