Added *.egg-info/ to the gitignore file

This ignores the `tornettools.egg-info/` directory that's generated when
you pip install the 'tornettools' project.

Author: stevenengler

.gitignore

@@ -1,3 +1,5 @@
 __pycache__
 /toolsenv
 /build
+# python build files
+*.egg-info/