Increased version number to 1.2.1.

README.md

-Dimorphite-DL 1.2
-=================
+Dimorphite-DL 1.2.1
+===================
 
 What is it?
 -----------
@@ -34,7 +34,7 @@ usage: dimorphite_dl.py [-h] [--min_ph MIN] [--max_ph MAX]
                         [--smiles_file FILE] [--output_file FILE]
                         [--label_states] [--test]
 
-Dimorphite 1.2: Creates models of appropriately protonated small moleucles.
+Dimorphite 1.2.1: Creates models of appropriately protonated small moleucles.
 Apache 2.0 License. Copyright 2018 Jacob D. Durrant.
 
 optional arguments:

dimorphite_dl.py

@@ -137,10 +137,10 @@ class ArgParseFuncs:
         :return: A parser object.
         """
 
-        parser = MyParser(description="Dimorphite 1.2: Creates models of " +
-                                    "appropriately protonated small moleucles. " +
-                                    "Apache 2.0 License. Copyright 2018 Jacob D. " +
-                                    "Durrant.")
+        parser = MyParser(description="Dimorphite 1.2.1: Creates models of " +
+                                      "appropriately protonated small moleucles. " +
+                                      "Apache 2.0 License. Copyright 2018 Jacob D. " +
+                                      "Durrant.")
         parser.add_argument('--min_ph', metavar='MIN', type=float, default=6.4,
                             help='minimum pH to consider (default: 6.4)')
         parser.add_argument('--max_ph', metavar='MAX', type=float, default=8.4,