Add upstream oh_my_zsh repo

zsh/plugins/fbterm/README.md

@@ -0,0 +1,10 @@
+# fbterm
+
+This plugin automatically starts [fbterm](https://github.com/zhangyuanwei/fbterm)
+if on a real TTY (`/dev/tty*`).
+
+To use it, add `fbterm` to the plugins array of your zshrc file:
+
+```zsh
+plugins=(... fbterm)
+```