[Ignore] remove preview text for presentability (#1719)

Author: TylerLeonhardt

README.md

@@ -1,9 +1,5 @@
 # PowerShell Language Support for Visual Studio Code
 
-> ## ATTENTION: This is the PREVIEW version of the PowerShell extension for VSCode which contains features that are being evaluated for stable. It works with PowerShell 5.1 and up.
-> ### If you are looking for the stable version, please [go here](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell) or install the extension called "PowerShell" (not "PowerShell Preview")
-> ## NOTE: If you have both stable (aka "PowerShell") and preview (aka "PowerShell Preview") installed, you MUST [DISABLE](https://code.visualstudio.com/docs/editor/extension-gallery#_disable-an-extension) one of them for the best performance. Docs on how to disable an extension can be found [here](https://code.visualstudio.com/docs/editor/extension-gallery#_disable-an-extension)
-
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/df06b9909e7442cebc1132bda0b8c0e3)](https://app.codacy.com/app/TylerLeonhardt/vscode-powershell?utm_source=github.com&utm_medium=referral&utm_content=PowerShell/vscode-powershell&utm_campaign=Badge_Grade_Dashboard)
 [![Version](https://vsmarketplacebadge.apphb.com/version/ms-vscode.PowerShell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell) [![Installs](https://vsmarketplacebadge.apphb.com/installs-short/ms-vscode.PowerShell.svg)](https://marketplace.visualstudio.com/items?itemName=ms-vscode.PowerShell) [![windows build](https://img.shields.io/appveyor/ci/PowerShell/vscode-powershell/master.svg?label=windows+build)](https://ci.appveyor.com/project/PowerShell/vscode-powershell) [![linux/macos build](https://img.shields.io/travis/PowerShell/vscode-powershell/master.svg?label=linux/macos+build)](https://travis-ci.org/PowerShell/vscode-powershell) [![Join the chat at https://gitter.im/PowerShell/vscode-powershell](https://badges.gitter.im/PowerShell/vscode-powershell.svg)](https://gitter.im/PowerShell/vscode-powershell?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 

package.json

@@ -1,10 +1,10 @@
 {
-  "name": "PowerShell-Preview",
-  "displayName": "PowerShell Preview",
+  "name": "PowerShell",
+  "displayName": "PowerShell",
   "version": "2.0.0",
   "preview": true,
   "publisher": "ms-vscode",
-  "description": "(Preview) Develop PowerShell scripts in Visual Studio Code!",
+  "description": "Develop PowerShell scripts in Visual Studio Code!",
   "engines": {
     "vscode": "^1.25.0"
   },