update readme

README.md

@@ -8,6 +8,20 @@ Intended to be compatible with Python 3.6+. Written and tested against Python
 If something doesn't work in Python 3.6, it's a bug. Please report any such
 bugs if they are encountered.
 
+# PyPI
+
+View on PyPI at [https://pypi.org/project/binary-bits/](https://pypi.org/project/binary-bits/)
+
+Install from PyPI:
+    python3 -m pip install binary-bits --upgrade
+
+Use in your project:
+```python
+import bits
+
+my_bytes = bits.Bytes(bytes.fromhex('deadbeef'))
+```
+
 # Similar projects
 ## [py-flags](https://pypi.org/project/py-flags/)