bears: Rename run_bear() to run()

coala's got this as a usability fix :).

Author: sils

bears/CommunicationBear.py

@@ -3,10 +3,10 @@
 
 
 class CommunicationBear(LocalBear):
-    def run_bear(self,
-                 filename,
-                 file,
-                 user_input: str):
+    def run(self,
+            filename,
+            file,
+            user_input: str):
         """
         Communicates with the user.
 

bears/HelloWorldBear.py

@@ -2,7 +2,7 @@
 
 
 class HelloWorldBear(LocalBear):
-    def run_bear(self,
-                 filename,
-                 file):
+    def run(self,
+            filename,
+            file):
         self.debug_msg("Hello World! Checking file", filename, ".")