fixed some installation issues

README.md

@@ -21,7 +21,9 @@ You can also start it via your applications menu.
 
 # Dependencies
 
-`python-evdev`
+Depending on how those packages are called in your distro:
+
+`python3-distutils-extra` `python3-evdev`
 
 # Tests
 

keymapper/data.py

@@ -29,7 +29,7 @@ import pkg_resources
 
 def get_data_path(filename=''):
     """Depending on the installation prefix, return the data dir."""
-    source_path = pkg_resources.require('keymapper')[0].location
+    source_path = pkg_resources.require('key-mapper')[0].location
 
     # depending on where this file is installed to, make sure to use the proper
     # prefix path for data