bash_completion (#25)

* install the bash_completion script
* complete for install, remove, update and list
* autocomplete for ubports-qa remove

Author: Fuseteam

debian/install

@@ -1 +1,2 @@
 ubports-qa /usr/bin
+ubports-qa_completion /etc/bash_completion.d

ubports-qa_completion

@@ -0,0 +1,18 @@
+#!/bin/bash
+_ubports-qa()
+{
+    local cur prev
+    cur="${COMP_WORDS[COMP_CWORD]}"
+    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    case $COMP_CWORD in
+	    1) COMPREPLY=( $(compgen -W "$(ubports-qa -h |awk '/   install/,/    update/{print $1}')" -- "${cur}") );;
+	    2)  [ "${prev}" = "remove" ] && COMPREPLY=( $(compgen -W "$(ubports-qa list)" -- "${cur}") );;
+	    *);;
+    esac
+    case $cur in
+	    -*) COMPREPLY=( $(compgen -W "$(_parse_usage ubports-qa)" -- "${cur}") );;
+    esac
+
+    return 0
+}
+complete -F _ubports-qa ubports-qa