add make gofmt

.check-gofmt.sh

@@ -3,6 +3,10 @@
 # exclude vendor/
 SOURCES="./oragono.go ./irc"
 
+if [ "$1" = "--fix" ]; then
+	exec gofmt -s -w $SOURCES
+fi
+
 if [ -n "$(gofmt -s -l $SOURCES)" ]; then
     echo "Go code is not formatted correctly with \`gofmt -s\`:"
     gofmt -s -d $SOURCES

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all install build release capdefs test smoke
+.PHONY: all install build release capdefs test smoke gofmt
 
 GIT_COMMIT := $(shell git rev-parse HEAD 2> /dev/null)
 
@@ -36,3 +36,6 @@ test:
 smoke:
 	oragono mkcerts --conf ./default.yaml || true
 	oragono run --conf ./default.yaml --smoke
+
+gofmt:
+	./.check-gofmt.sh --fix