Changed from using python uploader to codecov-exe uploader.

Author: Larz White

.nuget/packages.config

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
+  <package id="Codecov" version="1.0.1" />
   <package id="NuGet.CommandLine" version="2.8.3" />
   <package id="OpenCover" version="4.6.247-rc" />
   <package id="ReportGenerator" version="2.3.5.0" targetFramework="net452" />

appveyor.yml

@@ -12,9 +12,7 @@ build:
 test_script:
 - .\packages\OpenCover.4.6.247-rc\tools\OpenCover.Console.exe -register:user -target:"%xunit20%\xunit.console.x86.exe" -targetargs:"C:\projects\stylecopanalyzers\StyleCop.Analyzers\StyleCop.Analyzers.Test\bin\Debug\StyleCop.Analyzers.Test.dll -noshadow -appveyor" -returntargetcode -filter:"+[StyleCop*]*" -excludebyattribute:*.ExcludeFromCodeCoverage* -excludebyfile:*\*Designer.cs -hideskipped:All -output:.\StyleCopAnalyzers_coverage.xml
 - .\packages\OpenCover.4.6.247-rc\tools\OpenCover.Console.exe -register:user -target:"%xunit20%\xunit.console.x86.exe" -targetargs:"C:\projects\stylecopanalyzers\StyleCop.Analyzers\StyleCop.Analyzers.Test.CSharp7\bin\Debug\StyleCop.Analyzers.Test.CSharp7.dll -noshadow -appveyor" -returntargetcode -filter:"+[StyleCop*]*" -excludebyattribute:*.ExcludeFromCodeCoverage* -excludebyfile:*\*Designer.cs -hideskipped:All -mergebyhash -mergeoutput -output:.\StyleCopAnalyzers_coverage.xml
-- "SET PATH=C:\\Python34;C:\\Python34\\Scripts;%PATH%"
-- pip install codecov
-- codecov -f "StyleCopAnalyzers_coverage.xml"
+- .\packages\Codecov.1.0.1\tools\codecov.exe -f "StyleCopAnalyzers_coverage.xml"
 # preserve "packages" directory in the root of build folder but will reset it if packages.config is modified
 cache:
   - packages -> **\packages.config