Remove plugs

[mgiacomini]

Following the #63, this pull request remove all plugs in favor of a new lib.

[coveralls]

Coverage decreased (-0.08%) to 99.422% when pulling ccd6bf8 on remove-plugs into bdf19bb on master.

[mgiacomini]

https://github.com/ateliware/triplex_plug

[kelvinst]

Just remember to remove the references to plugs on README. Maybe mentioning that that now they're on triplex_plugs lib.

[kelvinst]

Also, once we merge #60, we must remove that one from here and move it there.

[mgiacomini]

Just remember to remove the references to plugs on README. Maybe mentioning that that now they're on triplex_plugs lib.

yes! I will work to improve the docs too.

[kelvinst]

@mgiacomini were you able to work on it? If not, can we send the task to someone else? I can take over if you want.