update docs and demo with newfound information

Author: JavaCode7

README.md

@@ -35,3 +35,19 @@
  ```python
  a_object = a.getObj()
  ```
+
+ To add a method to the object (can also be used to refresh the object after the dictionary is changed):
+ ```python
+ # define your method as a normal function
+ def a_print():
+     print("A is for apple")
+
+ # add the attribute
+ a.addAttr("printA", a_print)
+
+ # refresh the object
+ a_object = a.getObj()
+
+ # call the method (optional)
+ a_object.printA()
+ ```

demo.py

@@ -7,13 +7,26 @@
     "juice_level": 100
 })
 
+# Add attr
 idealApple.addAttr("green", True)
 print(idealApple)
 
+# Change existing attr
 idealApple.setAttr("juice_level", 75)
 print(idealApple)
 
+# Remove attr
 idealApple.delAttr("will_make_teeth_fall_out")
 print(idealApple)
 
-print(idealApple.getObj())
+# Get/refresh the object
+appleObj = idealApple.getObj()
+print(appleObj.crunchy)
+
+# Add method
+def applePrint():
+    print("I love apples")
+
+idealApple.addAttr("apples", applePrint)
+appleObj = idealApple.getObj()
+appleObj.apples()