Added ITP bug number, changed to experimental version, added long description

debian/changelog

-node-convert-to-spaces (1.0.1-1) UNRELEASED; urgency=low
+node-convert-to-spaces (1.0.1-1) experimental; urgency=low
 
-  * Initial release (Closes: #nnnn)
-  * New upstream release
+  * Initial release (Closes: #854569)
 
- -- Abhishek Lolage <abhisheklolage@gmail.com>  Wed, 08 Feb 2017 17:39:01 +0000
+ -- Abhishek Lolage <abhisheklolage@gmail.com>  Wed, 08 Feb 2017 17:06:13 +0000

debian/control

@@ -18,6 +18,7 @@ Depends:
  ${misc:Depends}
  , nodejs
 Description: Convert tabs to spaces in a string
- FIX_ME long description
+ Replaces '\t' in a given input string
+ with given number of spaces (default 2 spaces). 
  .
  Node.js is an event-based server-side JavaScript engine.