Fix generator class_name exception

CONTRIBUTORS.md

@@ -12,3 +12,4 @@ documentation, or testing:
 - Subhash Bhushan (subhashb)
 - Sam Likins (samlikins)
 - Dakota Blair (dakotablair)
+- Luca Crea (lcrea)

cement/cli/templates/generate/project/{{ label }}/core/exc.py

@@ -1,13 +1,4 @@
 
 class {{ class_name }}Error(Exception):
     """Generic errors."""
-
-    def __init__(self, msg):
-        Exception.__init__(self)
-        self.msg = msg
-
-    def __str__(self):
-        return self.msg
-
-    def __repr__(self):
-        return "<{{ class_name }}Error - %s>" % self.msg
+    pass

cement/cli/templates/generate/project/{{ label }}/main.py

@@ -66,7 +66,7 @@ def main():
                 import traceback
                 traceback.print_exc()
 
-        except {{ class_name}}Error:
+        except {{ class_name }}Error as e:
             print('{{ class_name }}Error > %s' % e.args[0])
             app.exit_code = 1