Add relational operators.

Codecademy.md

@@ -87,12 +87,31 @@ strings"""
 True = int(1)
 False = int(0)
 
+## Relational Operators (ch.4, ex. 3)
+
+  `==` returns `True` if is is equal and returns `False` otherwise.
+  `!=` returns `True` if is is NOT equal and returns `False` otherwise.
+
+  Here are more of he same kind of operator:
+
+  `>` greater than
+  `<` less than
+  `>=` greater than or equal to
+  `<=` less than or equal to
+
+  
+
+
 # Datatypes
 
 Force treating as a string: str(7)
 Force treating as an integer: int("7")
 Froce treating as a float: float(7)
 
+## Check Datatypes
+
+  Check datatypes using type(var)
+
 # Escaping Characters
 
 Simply add a `\` to escape a character that would otherwise cause issues.