Instrumentation classes added for controls

controls/__init__.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+'''Chemical Engineering Design Library (ChEDL). Utilities for process modeling.
+Copyright (C) 2016, Caleb Bell <[email protected]>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.'''
+
+from __future__ import division