Update README

README.md

@@ -1,3 +1,37 @@
 # Wish
 
 A customizable bash prompt.
+
+# Installation
+
+## One step Installation
+
+`curl https://gitlab.com/ceda_ei/wish/raw/master/install.sh | bash`
+
+## Manual Installation
+
++ `cd ~/.config/`
++ `git clone https://gitlab.com/ceda_ei/wish.git`
++ Add the following lines to ~/.bashrc
+
+```
+WISH_PLUGINS=(exit_code_smiley bg_jobs date path newline vcs)
+WISH_THEME=plain
+source ~/.config/wish/wish.sh
+```
+
+# Customization
+
++ To change the order of plugins, edit the `WISH_PLUGINS` array.
++ To change the theme, edit the `WISH_THEME` variable.
++ To enable/disable powerline fonts, set `WISH_POWERLINE` to `1` or `0`.
+
+## Example config
+
+![Example Config](screenshots/example_config.png)
+```
+WISH_DATE_FORMAT="%d %b %H:%M" # Look in date plugin for details
+WISH_PLUGINS=(newline exit_code bg_jobs tmux date battery path python_venv newline vcs space)
+WISH_POWERLINE=1
+WISH_THEME=rgb_gradient
+```