Use go module (#303)

* Migrate to gomodule

* Fix install

* Update makefile

go.mod

@@ -0,0 +1,41 @@
+module github.com/dnote/dnote
+
+go 1.13
+
+require (
+	github.com/PuerkitoBio/goquery v1.5.0 // indirect
+	github.com/aymerick/douceur v0.2.0
+	github.com/dnote/actions v0.2.0
+	github.com/dnote/color v1.7.0
+	github.com/gobuffalo/packr v1.30.1 // indirect
+	github.com/gobuffalo/packr/v2 v2.7.1
+	github.com/google/go-cmp v0.3.1
+	github.com/google/go-github v17.0.0+incompatible
+	github.com/google/go-querystring v1.0.0 // indirect
+	github.com/google/uuid v1.1.1
+	github.com/gorilla/css v1.0.0 // indirect
+	github.com/gorilla/mux v1.7.2
+	github.com/jinzhu/gorm v1.9.9
+	github.com/joho/godotenv v1.3.0
+	github.com/justincampbell/bigduration v0.0.0-20160531141349-e45bf03c0666 // indirect
+	github.com/justincampbell/timeago v0.0.0-20160528003754-027f40306f1d
+	github.com/lib/pq v1.1.1
+	github.com/mattn/go-colorable v0.0.9 // indirect
+	github.com/mattn/go-isatty v0.0.8 // indirect
+	github.com/mattn/go-sqlite3 v1.10.0
+	github.com/pkg/errors v0.8.1
+	github.com/radovskyb/watcher v1.0.7
+	github.com/robfig/cron v1.2.0
+	github.com/rubenv/sql-migrate v0.0.0-20190618074426-f4d34eae5a5c
+	github.com/sergi/go-diff v1.0.0
+	github.com/spf13/cobra v0.0.5
+	github.com/stripe/stripe-go v61.7.1+incompatible
+	github.com/ziutek/mymysql v1.5.4 // indirect
+	golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4
+	golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0 // indirect
+	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4
+	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
+	gopkg.in/gomail.v2 v2.0.0-20150902115704-41f357289737
+	gopkg.in/gorp.v1 v1.7.2 // indirect
+	gopkg.in/yaml.v2 v2.2.2
+)