title: How create a file and put my data in there?
body: <p>If I have a string bellow: </p>
  
  <pre><code>const inputString = 
  "v=0
  o=- 1443716955 1443716955 IN IP4 10.20.130.110
  m=video 20000 RTP/AVP 96 // &lt;== this line 
  c=IN IP4 239.0.1.2/64
  a=source-filter: incl IN IP4 239.0.1.2 192.168.0.1
  a=rtpmap:96 raw/90000
  a=mid:primary
  m=video 20000 RTP/AVP 96 // &lt;== this line 
  c=IN IP4 239.0.1.3/64
  a=source-filter: incl IN IP4 239.0.1.3 192.168.0.1";
  </code></pre>
  
  <p>And want to save it like SDP file, How is it possible!</p>