Merge pull request #410 from Morganamilo/ignore2

Fix --ignore flag while skipping updates ammended

install.go

@@ -115,12 +115,15 @@ func install(parser *arguments) error {
 		}
 
 		value, _, exists := cmdArgs.getArg("ignore")
+
+		if len(ignore) > 0 {
 			ignoreStr := strings.Join(ignore.toSlice(), ",")
 			if exists {
 				ignoreStr += "," + value
 			}
-
 			arguments.options["ignore"] = ignoreStr
+		}
+
 		fmt.Println()
 
 		for pkg := range aurUp {