Fixed packaging command (#18)

Author: shibayan

appveyor.yml

@@ -26,17 +26,16 @@ after_build:
       if ($env:APPVEYOR_REPO_TAG -eq $true) {
           xcopy .\IIS.Compression\bin\Release\x86\* .\build\32bit\ /I
           xcopy .\IIS.Compression\bin\Release\x64\* .\build\64bit\ /I
-          nuget pack .\IIS.Compression.SiteExtension.nuspec -BasePath .\build -OutputDirectory .\ -Version $env:APPVEYOR_REPO_TAG_NAME
+          nuget pack .\IIS.Compression.SiteExtension.nuspec -BasePath .\build -OutputDirectory .\ -Version $($env:APPVEYOR_REPO_TAG_NAME.Substring(1))
       }
 
 artifacts:
   - path: '*.nupkg'
 
 deploy:
-  provider: NuGet
-  api_key:
-    secure: z8WTDEqftESoalyJXT6Fta22vbcgwZ2M9FXLpU4KnAEtcsXbQVpoNURDBk0W8b6S
-  skip_symbols: true
-  artifact: /.*\.nupkg/
-  on:
-    appveyor_repo_tag: true
+  - provider: NuGet
+    api_key: $(NUGET_API_KEY)
+    skip_symbols: true
+    artifact: /.*\.nupkg/
+    on:
+      appveyor_repo_tag: true