Added seperate exceptions file

printr/exceptions.py

@@ -0,0 +1,5 @@
+class FormattingError(Exception):
+    message = "Provided string doesn't contain formatting placeholders for {c} and/or {m}"
+    def __init__(self):
+        super().__init__(self.message)
+

printr/itterPrintr.py

@@ -1,7 +1,4 @@
-class FormattingException(Exception):
-    message = "Provided string doesn't contain formatting placeholders for {c} and/or {m}"
-    def __init__(self):
-        super().__init__(self.message)
+from exceptions import FormattingError
 
 
 class ItterPrintr():