Changing nuspec file

Author: matt-lethargic

GeoJSON.Net.nuspec

@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/10/nuspec.xsd">
     <metadata>
         <id>GeoJSON.Net</id>
-        <version>$version$-alpha</version>
+        <version>$version$</version>
         <authors>Matt Hunt,Joerg Battermann</authors>
         <owners>Matt Hunt,Joerg Battermann and GeoJSON.Net contributors.</owners>
         <licenseUrl>https://github.com/GeoJSON-Net/GeoJSON.Net/blob/master/LICENSE.md</licenseUrl>