Added in a create option also

cheat

@@ -46,6 +46,30 @@ def cheat_files(cheat_directories):
                             and not cheat.startswith('__')]))
     return cheats
 
+def edit_cheatsheet(cheat, cheatsheets):
+    "Edit a pre-existing cheatsheet."
+    if cheat not in cheatsheets:
+        print 'No cheatsheet found for "%s"' % cheat
+        ans = raw_input('Create cheatsheet for "%s" (Y/N)? ' % cheat)
+        if ans.lower() in ['y', 'yes']:
+            create_cheatsheet(cheat, cheatsheets)
+        else:
+            exit()
+
+    subprocess.call([os.environ['EDITOR'],
+                    os.path.join(cheatsheets[cheat], cheat)])
+    exit()
+
+def create_cheatsheet(cheat, cheatsheets):
+    "Create a new cheatsheet."
+    if cheat in cheatsheets:
+        print 'Cheatsheet "%s" already exists' % cheat
+        exit()
+
+    import cheatsheets as cs
+    subprocess.call([os.environ['EDITOR'],
+                    os.path.join(cs.cheat_dir, cheat)])
+    exit()
 
 def main():
     # assemble a keyphrase out of all params passed to the script
@@ -70,24 +94,26 @@ def main():
                                 for key, value in cheatsheets.items()]))
         exit()
 
-    # if the user wants to edit a cheatsheet
-    if sys.argv[1].lower() in ['-e', '--edit']:
-        if len(sys.argv) < 2:
-            print 'Must provide a cheatsheet to edit'
-            exit()
-
-        cheatsheet = ' '.join(sys.argv[2:])
-
-        if cheatsheet not in cheatsheets:
-            print 'No cheatsheet found for %s.' % cheatsheet
-            exit()
-
+    # create/edit option
+    option = sys.argv[1].lower()
+    if option in ['-e', '--edit', '-c', '--create']:
+        # make sure EDITOR environment variable is set and that at least 3 arguments
+        # are given
         if 'EDITOR' not in os.environ:
-            print 'Must set your EDITOR environment variable to default editor path'
+            print('In order to use "create" or "edit" you must set your '
+                  'EDITOR environment variable to your favorite editor\'s path')
+            exit()
+        elif len(sys.argv) < 3:
+            print 'Must provide a cheatsheet to edit/create'
             exit()
 
-        subprocess.call([os.environ['EDITOR'],
-                        os.path.join(cheatsheets[cheatsheet], cheatsheet)])
+        # if the user wants to edit a cheatsheet
+        if option in ['-e', '--edit']:
+            edit_cheatsheet(' '.join(sys.argv[2:]), cheatsheets)
+
+        # if the user wants to create a cheatsheet
+        elif option in ['-c', '--create']:
+            create_cheatsheet(' '.join(sys.argv[2:]), cheatsheets)
 
     # print the cheatsheet if it exists
     if keyphrase in cheatsheets: