Updating to jadonk - #1

printing out the socket response from the browser shows the hostname as :
http:// [object] [method] :80

had to modify both the client and server since the method of translation
at the client side will throw the deprecation warning even if node_style
callbacks are used,confirmed working of both style callbacks, needs to add test-case

test cases not added for hw_... dependent cases

…ases

hw_simulator modified to support nodestyle callbacks,added tests for
previously omitted cases

also changed console messages and function names on test-rpc.js from
..._previous to ..._oldstyle

Support nodestyle callbacks

add code comments wherever necessary for changes made as part of
GSoC '18 work

used express-session middleware to handle the session(added as dependency)
used basic-auth to handle authentication(added as dependency)
modify the startclient to send cookie data
modify the startServer to accept credentials
tested both from browser and via node, works well

originally written by @troywweber7
also submitted to @types : DefinitelyTyped/DefinitelyTyped#26814

authentication at express level was removed and was implemented at
the socket.io connection through extraheaders, corresponding modification
was made at server and client
* username & password send as basic authentication headers
* modified server.js to read config file from /etc/default/bonescript
the config file format used was :
{
 "username":"debian",
 "password":"temppwd",
 "port": 8000 ,
 "directory": "/usr/share/bone101"
 }
* need to add more test cases and make other improvements

expression session dependency was removed and simple socket.io middleware
 hash-challenge was used for authentication, modified the client and
server for the changes the passphrase can be supplied to serverstart already
as hash or as plaintext: the configuration files used for testing server.js were:
{
 "hash": true,
 "passphrase":"9f735e0df9a1ddc702bf0a1a7b83033f9f7153a00c29de82cedadc9957289b05",
 "port": 8000 ,
 "directory": "/usr/share/bone101"
 }
and
{
 "hash": false,
 "passphrase":"testpassword",
 "port": 8000 ,
 "directory": "/usr/share/bone101"
 }

also other unnecessary dependencies were removed, need to add test cases

modified rpc tests to increase converage
added analogWrite(), digitalWrite() and pinMode() tests
modified test-ffi to include callback cases
added test-math based on pattern of math functions
added test-digitalRead() and test-analogRead()

in the case of analogWrite() on digital out, the callbacks were invoked
twice everytime, found while writing a test-case

the callback on digitalWrite on AnalogOut was never invoked
due to error in arguments supplied to analogWrite()

add session based authentication for rpc

change function return value type to any
removed getEeproms definition
defined platform object structure
removed unnecesary exports

add TypeScript definitions

changes made to node-roboticscape: jadonk/node-roboticscape#5

tested on:
BeagleBone Blue BeagleBoard.org Debian Image 2018-03-05
Linux beaglebone 4.9.105-ti-r113
rc_version : 0.4.4

add rcServo,rcIMU,rcBMP functions