update readme to remove commands that are no longer required to run t…

…he project.

README.md

@@ -65,7 +65,7 @@ $ cd geoview
 
 ### Install rush globally
 
-```powershell
+```
 $ npm install -g @microsoft/rush
 ```
 
@@ -87,16 +87,8 @@ $ rush update --full
 
 ### Build the project:
 
-#### Windows
-
-```powershell
-$ rush build:core
 ```
-
-#### Mac/Linux/WSL
-
-```BASH
-$ rush build:mac
+$ rush build:core
 ```
 
 Output build files will be placed under
@@ -107,16 +99,8 @@ packages/geoview-core/dist
 
 ### Run/Serve the project
 
-#### Windows
-
-```powershell
-$ rush serve
 ```
-
-#### Mac/Linux/WSL
-
-```BASH
-$ rush serve:mac
+$ rush serve
 ```
 
 GeoView will be serve from http://localhost:8080/
@@ -125,16 +109,8 @@ GeoView will be serve from http://localhost:8080/
 
 ### Build the project:
 
-#### Windows
-
-```powershell
-$ rush build:core
 ```
-
-#### Mac/Linux/WSL
-
-```BASH
-$ rush build:mac
+$ rush build:core
 ```
 
 ### Push the dist folder to your gh-pages