README: Add link to Wikipedia article on Python.

For the case that README will be read by someone completely not familiar
with Python.

Change-Id: I372f773b37c8525c92889e844b3259b281f43dd0
Signed-off-by: Paul Sokolovsky <pfalcon@users.sourceforge.net>

README.md

@@ -6,8 +6,9 @@ The Pycopy project
 [Web site](https://pycopy.github.io/) | [Documentation](https://pycopy.readthedocs.io/)
 
 Pycopy aims to develop and maintain a **minimalist**, lightweight,
-and extensible implementation of Python(-compatible) language.
-Pycopy to CPython is a similar thing as
+and extensible implementation of
+[Python](https://en.wikipedia.org/wiki/Python_(programming_language))(-compatible)
+language. Pycopy to CPython is a similar thing as
 [Scheme](https://en.wikipedia.org/wiki/Scheme_(programming_language))
 to [Common Lisp](https://en.wikipedia.org/wiki/Common_Lisp).
 Pycopy works similarly well in the cloud, on desktop systems, on small