refine the DevREADME.md for more cleaner setup and compile steps (#65)

##### Objective
I want to make the devREADME.md has more cleaner steps for new developers.

##### Abstractions
Now for new developer it should only do two things:
1. git pull to get the codes
2. run` python pack.py` to compile the codes

Other details information like `npm install` or copy the correct file to correct location is hidden in the pack.py file.

And I also added one section how to setup the environment in Autodesk domain to work around the NPM local setting limitation.
##### Tests performed

##### Screen shot
No applicable for this PR.

Author: hualin-wu-2000

DevREADME.md

@@ -2,27 +2,17 @@
 
 AutoCAD Lisp Extension is a vscode extension for debug AutoCAD AutoLISP. The Extension plays the roles of both debug adapter and language server which could enable you debug lisp with AutoCAD. The following description is for developers.
 
-## How to setup the Dev Env
-npm install -g yarn (if it's not installed yet)
+## How to setup the Dev env and compile the code
 
-Then you could setup the develop environment by:
+You could do all the steps in the script pack.py, it is python2; or run it directly:
 ```
 cd AutoLispExt
-npm install --global gulp-cli
-npm install 
-```
-__NOTE:__ You may see a warning `"The engine "vscode" appears to be invalid"` while running `yarn install`. This is a known problem. Please refer to the [VSCode issue](https://github.com/microsoft/vscode/issues/91009).
-## How to compile the code
-You could compile the code by:
-```
-cd AutoLispExt
-gulp build
-copy utils\acadProcessFinder\bin\acadProcessFinder.exe extension\out\process
+python pack.py
 ```
-If you only want to build the ts file and debug it via F5, you can run:
+### How to compile the codes
+The script pack.py will copy some utility files to correct location for making package. After run that script and then change some TS codes, you can also use the follow command to compile codes simply:
 ```
-=> Windows:   winCompile.bat
-=> Otherwise: ./macCompile.sh
+npm run compile
 ```
 
 ## How to debug the extension
@@ -32,36 +22,29 @@ If you only want to build the ts file and debug it via F5, you can run:
 3. hit F5 and select "Extension Client", then it will start another vscode instance with running the extension. 
 4. Do some operations to invoke the codes which are added breakpoints, vscode will stop in the first instance.
 
-
 ## How to package the extension
 
 You could package the extension by:
 ```
-cd AutoLispExt
-gulp package
-```
-Note that don't run "publish" command otherwise you make sure you want to do.
-For the publish command it will release current version extension to vscode market. 
-
-## The Script pack.py
-
-You could do all above steps  by the script pack.py, it is python2
-```
-cd AutoLispExt
 python pack.py
 ```
+It will create the package in the current folder.
 
 ## Run tests
 
 You have two ways to run the tests:
   - Run inside the VS Code and begin debugging by choosing "Extension Tests"
   - Run on terminal outside of VS Code and make sure no VS code is running (VS Code terminal will not work due to VS Code limitation) 
 ```
-yarn test
+npm run test
 ```
 
 ### The following steps require access to Autodesk network resources and therefore can only be done by Autodesk employees
 
+## NPM settings
+Because the mandatory local NPM setting in Autodesk, for Autodesk developer you can simply replace all the ocurrences in pacake-lock.json like:
+replace https://registry.npmjs.org/ with https://art-bobcat.autodesk.com:443/artifactory/api/npm/autodesk-npm-virtual/
+
 ## Build status
 
 [![Build Status](https://master-2.jenkins.autodesk.com/buildStatus/icon?=job/AutoCAD/job/AutoLispExt/master)](https://master-2.jenkins.autodesk.com/buildStatus/icon?=job/AutoCAD/job/AutoLispExt/master/)