add completion

gis_completion.bash

@@ -0,0 +1,16 @@
+function _gis_completion {
+    cur=${COMP_WORDS[COMP_CWORD]}
+    prev=${COMP_WORDS[COMP_CWORD-1]}
+    if [[ ${prev} == -p ]] || [[ ${prev} == --path ]]; then
+        OLDIFS=$IFS
+        IFS='
+'
+        COMPREPLY=( $(compgen -d -- "${cur}") )
+        IFS=$OLDIFS
+    else
+        args="--help --path fetch pull"
+        COMPREPLY=( $(compgen -W "${args}" -- "${cur}") )
+    fi
+}
+
+complete -o filenames -F _gis_completion gis