Updated Building the SDK (markdown)

Building-the-SDK.md

@@ -25,21 +25,15 @@ Change to the SDK's directory:
 cd botbuilder-python
 ```
 
-Use the `build-all.cmd` script to install the SDK.
+Use the `build-all.cmd` script to install the packages for local development.
 
 This script executes the following commands:
 ```bash
-cd .\libraries\botbuilder-schema\
-python .\setup.py bdist_wheel
-pip install .\dist\microsoft_botbuilder_schema-4-py2.p3-none-any.whl
-cd ..\botframework-connector\
-python .\setup.py bdist_wheel
-pip install .\dist\microsoft_botframework_connector-3-py2.py3-none-any.whl
-cd ..\botbuilder\
-python .\setup.py bdist_wheel
-pip install .\dist\microsoft_botbuilder-4.0.0a0-py3-none-any.whl
+pip install -e .\libraries\botbuilder-schema
+pip install -e .\libraries\botframework-connector
+pip install -e .\libraries\botbuilder-core
 ```
-Verify that the dependencies were installed by running the command '**pip list**' in your terminal, which will display the dependencies installed to your virtual environment. 
+You can alternatively build the wheel packages. Verify that the dependencies were installed by running the command '**pip list**' in your terminal, which will display the dependencies installed to your virtual environment.
 
 ### Running the Echo bot sample