Updated build to use new dotnet-install.ps1

Author: merbla

appveyor.yml

@@ -3,7 +3,7 @@ image: Visual Studio 2015
 configuration: Release
 install:
   - ps: mkdir -Force ".\build\" | Out-Null
-  - ps: Invoke-WebRequest "https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0/scripts/obtain/install.ps1" -OutFile ".\build\installcli.ps1"
+  - ps: Invoke-WebRequest "https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0/scripts/obtain/dotnet-install.ps1" -OutFile ".\build\installcli.ps1"
   - ps: $env:DOTNET_INSTALL_DIR = "$pwd\.dotnetcli"
   - ps: '& .\build\installcli.ps1 -InstallDir "$env:DOTNET_INSTALL_DIR" -NoPath'
   - ps: $env:Path = "$env:DOTNET_INSTALL_DIR;$env:Path"
@@ -18,4 +18,4 @@ deploy:
     secure: nvZ/z+pMS91b3kG4DgfES5AcmwwGoBYQxr9kp4XiJHj25SAlgdIxFx++1N0lFH2x
   skip_symbols: true
   on:
-    branch: /^(dev|master)$/
+    branch: /^(dev|master)$/