Merge branch 'master' of github.com:sanderland/katrain into 1.7.2

.gitignore

@@ -8,7 +8,6 @@ experiments
 .buildozer
 bin
 gtp.log
-*.zip
 log.txt
 sgfout
 sgf_selfplay

THEMES.md

@@ -1,11 +1,22 @@
 # Themes
 Version 1.7 brings basic support for themes.
 
+## Creating and editing themes
+
 * Look at the `Theme` class in `katrain/gui/theme.py`.
 * Make a `theme.json` file in your `<home dir>/.katrain` directory and specify any variables from the above class you want to override, e.g. 
  ```json
  {
   "BACKGROUND_COLOR": [1,0,0,1]
 }
   ```
-* All resources (including icons which can not be renamed for now) will be looked up in `<home dir>/.katrain` first, so files with identical names there can be used to override sounds and images.
+* All resources (including icons which can not be renamed for now) will be looked up in `<home dir>/.katrain` first, so files with identical names there can be used to override sounds and images.
+
+## Available themes
+
+* See [here](https://github.com/sanderland/katrain/blob/master/themes/) for available themes. 
+* To install a theme, simply unzip the theme.zip to your .katrain folder. 
+  * On windows you can find it in C:\Users\you\.katrain and on linux in ~/.katrain.
+  * When in doubt, the general settings dialog will also show the location.
+* To uninstall a theme, remove theme.json and all relevant images from that folder.
+