fixes

toot.sh

@@ -19,7 +19,7 @@ toot_help(){
 
 if [ -f ~/.tootrc ]
 then
-    source ~/.tootrc
+    . ~/.tootrc
 fi
 
 toot_upload_image(){
@@ -52,7 +52,7 @@ toot_post(){
 
 image_to_toot=""
 
-if [ -n "$@" ]
+if [ -z "$@" ]
 then
     toot_help
     exit 1