get SHA1 hash

@sameh.hady, may be we can share our experience. Base is the same, since my knowledge of C is poor. May be waiting for somebody adding a server to Espruino, as suggested by @Gordon, would be a better way. But at least I learned a lot around datahandling with sockets ;-)
I've found an SHA1 implementation and added it to my testing environment around Espruino on ESP8266. You can find my actual source here:

• http://jumspruino.jumware.com/sources/ES­P8266Test.js, see function startSocket and SHA-functions.
  
• http://jumspruino.jumware.com/sources/We­bSocket.htm
  This is far away from being perfect, but it includes SHA1 and decoding/encoding for socket frame. Its tested in my environment with firefox and chrome. For connection I use the http-module from Espruino, which makes it easy to handle headers.
  Todo list, please have in mind, very early status:
  
• keep connection alive
  
• socket frame for data > 200 bytes
  
• problem with IE, which sends uppercase chars in upgrade header.
  
• testing, testing, testing
  
• .....