remove hyphen in "python-fire"

Author: dbieber

README.md

@@ -278,7 +278,7 @@ Inspired by [awesome-php](https://github.com/ziadoz/awesome-php).
  * [clint](https://github.com/kennethreitz/clint) - Python Command-line Application Tools.
  * [docopt](http://docopt.org/) - Pythonic command line arguments parser.
  * [Gooey](https://github.com/chriskiehl/Gooey) - Turn command line programs into a full GUI application with one line.
- * [Python-Fire](https://github.com/google/python-fire) - A library for creating command line interfaces from absolutely any Python object.
+ * [Python Fire](https://github.com/google/python-fire) - A library for creating command line interfaces from absolutely any Python object.
  * [python-prompt-toolkit](https://github.com/jonathanslenders/python-prompt-toolkit) - A library for building powerful interactive command lines.
 * Terminal Rendering
  * [asciimatics](https://github.com/peterbrittain/asciimatics) - A package to create full-screen text UIs (from interactive forms to ASCII animations).