Add nuspec file

Beckman.Snippets/Beckman.Snippets.csproj

@@ -67,6 +67,7 @@
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
       <IncludeInVSIX>true</IncludeInVSIX>
     </Content>
+    <None Include="Beckman.Snippets.nuspec" />
     <None Include="source.extension.vsixmanifest">
       <SubType>Designer</SubType>
     </None>

Beckman.Snippets/Beckman.Snippets.nuspec

+<?xml version="1.0"?>
+<package >
+  <metadata>
+    <id>$id$</id>
+    <version>$version$</version>
+    <title>$title$</title>
+    <authors>$author$</authors>
+    <owners>$author$</owners>
+    <licenseUrl>file://License.txt</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <description>$description$</description>
+    <releaseNotes>Initial release</releaseNotes>
+    <copyright>Copyright 2016</copyright>
+    <tags>snippets beckman visual studio uiuc</tags>
+  </metadata>
+</package>