Alot of name changes and file name changes

src/mutation/__init__.py

@@ -1,2 +1,2 @@
 # FROM (. means local) file_name IMPORT function_name
-from .examples import mutation_examples
+from .methods import Mutation_methods

src/mutation/examples.py

@@ -1,3 +0,0 @@
-class mutation_examples:
-    """Selection examples will go here """
-    pass

src/mutation/methods.py

@@ -0,0 +1,3 @@
+class Mutation_methods:
+    """Mutation examples will go here """
+    pass