Add readme

README.md

@@ -1 +1,24 @@
-placetel
+# placetel
+
+With this small library you should be able to address some nodes of the Placetel API. Please note that we have only implemented a tiny part of it and will continue to develop it as needed.
+
+Feel free to help us with the development!
+
+## Install
+
+```console
+go get github.com/jjideenschmiede/placetel
+```
+
+## How to use it?
+
+### SMS
+
+With the SMS sent you are able to send sms through your Placetel account. The whole thing works as follows:
+
+```go
+err := placetel.SendSMS("Phone number", "Message", "Token")
+if err != nil {
+    fmt.Println(err)
+}
+```