Adding type needed to send message

src/twilio/types/mod.rs

@@ -0,0 +1,10 @@
+
+// Things needed to send a message
+// Contact - Receipient to send to (textsender-models)
+// Message - The content to sent (textsender-models)
+// Parameters - Controls flow of sending message
+// Config - Contains info needed to send message (textsender-models)
+pub struct Parameters {
+    pub schedule: bool,
+    pub schedule_at: Option<time::OffsetDateTime>,
+}