Fixes security issue & Adds support to sent configuration via email (#83)

emailer/interface.go

@@ -0,0 +1,10 @@
+package emailer
+
+type Attachment struct {
+	Name string
+	Data []byte
+}
+
+type Emailer interface {
+	Send(toName string, to string, subject string, content string, attachments []Attachment) error
+}