Style guide - code blocks (#156)

Author: mongoKart

source/includes/python-sample.py

@@ -0,0 +1,11 @@
+print("Hello Docs team!")
+print("This is Python code...")
+print("...in another file.")
+print("This line will be included in the docs...")
+print("...but this line won't.")
+
+def sample_function():
+  # start-function-sample
+  print("This sample has comments to mark the extract start and end.")
+  # end-function-sample
+  print("This line won't be included in the sample.")

source/reference.txt

@@ -12,7 +12,7 @@ Reference
    /redirects
    /reference/apiargs
    /reference/cond
-   /reference/copyable
+   /reference/code-blocks
    /reference/eval
    /reference/icon
    /reference/lightbox