Add rule when variable name has a number

README.md

@@ -2020,6 +2020,7 @@ no parameters.
   :someSymbol
 
   someVar = 5
+  var_10  = 10
 
   def someMethod
     # some code
@@ -2032,11 +2033,39 @@ no parameters.
   # good
   :some_symbol
 
+  some_var = 5
+  var10    = 10
+
   def some_method
     # some code
   end
   ```
 
+* <a name="snake-case-symbols-methods-vars-with-numbers"></a>
+  Do not separate numbers from letters on symbols, methods and variables.
+<sup>[[link](#snake-case-symbols-methods-vars-with-numbers)]</sup>
+
+  ```Ruby
+  # bad
+  :some_sym_1
+
+  some_var_1 = 1
+
+  def some_method_1
+    # some code
+  end
+
+  # good
+  :some_sym1
+
+  some_var1 = 1
+
+  def some_method1
+    # some code
+  end
+  ```
+
+
 * <a name="camelcase-classes"></a>
   Use `CamelCase` for classes and modules.  (Keep acronyms like HTTP, RFC, XML
   uppercase.)