Merge pull request #132 from qq88976321/fix-indent-argument-parsing

Fix #131: --indent argument makes the script crashed

Author: ekalinin

gh-md-toc

@@ -349,7 +349,7 @@ gh_toc_app() {
 
     if [ "$1" = '--indent' ]; then
         indent="$2"
-        shift
+        shift 2
     fi
 
     if [ "$1" = "-" ]; then