Update README.md, sensors_api.md files

test

sensors_api.md

+# Sensor Data API
+## Introduction 
+Variables are defined as **${variable_name}**
+
+## Set HTTP Header
+<pre><code>  Client: <b>${your-client-guid} </b>
+  Token:  <b>${your-token} </b></code></pre>
+
+ ## Method and URL
+<pre><code>POST: [https://twin.rtls.solutions/api/sensors?api-version=2.0]</code></pre>
+
+## Request body
+<pre><code>[ 
+ { 
+  "l":  <b>${sensor-login}</b>, // login 
+  "data":[
+    { 
+      "n": "Temperature", // name of the quantity 
+      "v": "10", // value
+      "u": "°C" // unit
+      "d": "Int32" // data type
+    }
+   ]
+ },
+] </code></pre>
+### Available data types :
+- Boolean 
+- Byte
+- SByte
+- Char
+- Decimal
+- Double
+- Single
+- Int32
+- UInt32
+- Int64
+- UInt64
+- Int16
+- UInt16