Fix CI to use master again

Author: rjmholt

.travis.yml

@@ -16,7 +16,7 @@ before_install:
       sudo apt-get install libunwind8;
     fi
 install:
-  - git clone --single-branch -b 2.0.0 https://github.com/PowerShell/PowerShellEditorServices.git ../PowerShellEditorServices
+  - git clone https://github.com/PowerShell/PowerShellEditorServices.git ../PowerShellEditorServices
   - pushd build
   - bash <(curl -s https://raw.githubusercontent.com/PowerShell/PowerShell/master/tools/install-powershell.sh)
   - popd

appveyor.yml

@@ -13,7 +13,7 @@ environment:
   DOTNET_CLI_TELEMETRY_OPTOUT: true        # Don't send telemetry
 
 install:
-  - git clone --single-branch -b 2.0.0 https://github.com/PowerShell/PowerShellEditorServices.git ../PowerShellEditorServices
+  - git clone https://github.com/PowerShell/PowerShellEditorServices.git ../PowerShellEditorServices
   - ps: Install-Product node '6.9.2'
   - ps: |
       Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Force | Out-Null