Update README.md for tpm support

README.md

@@ -5,6 +5,8 @@ A pack of various themes for Tmux.
 
 ## Installation
 
+### Install manually
+
 1. Clone repo to local machine:
 
         git clone https://github.com/jimeh/tmux-themepack.git ~/.tmux-themepack
@@ -13,6 +15,21 @@ A pack of various themes for Tmux.
 
         source-file "${HOME}/.tmux-themepack/powerline/block/green.tmuxtheme"
 
+### Install using [Tmux Plugin Manager](https://github.com/tmux-plugins/tpm)
+
+Add plugin to the list of TPM plugins in `.tmux.conf`:
+
+        set -g @plugin 'jimeh/tmux-themepack'
+
+Hit `prefix + I` to fetch the plugin and source it. The plugin should now be working.
+
+You can pick and choose a theme via `.tmux.conf` option:
+
+- `set -g @themepack 'block/blue'` (default)
+- `set -g @themepack 'block/cyan'`
+- `set -g @themepack 'default/gray'`
+- `set -g @themepack 'double/megenta'`
+- `...`
 
 ## Themes