Added the summary, description, and tags to the nuspec file.

Issue #3.

Author: mrbiggred

Source/SaturdayMP.XPlugins.iOS.BEMCheckBox.nuspec

@@ -9,7 +9,13 @@
         <licenseUrl>https://github.com/saturdaymp/XPlugins.iOS.BEMCheckBox/blob/master/LICENSE</licenseUrl>
         <projectUrl>https://github.com/saturdaymp/XPlugins.iOS.BEMCheckBox</projectUrl>
         <requireLicenseAcceptance>false</requireLicenseAcceptance>
-        <description>Use the BEMCheckBox in Xamarin iOS applications.</description>
+		<summary>Use the excellent BEMCheckBox in Xamarin iOS applications.</summary>
+        <description>
+			Easily use the BEMCheckBox by Boris-Em in Xamarin iOS applications.  Just wraps the objective-c 
+			BEMCheckBox using the Xamarin native bindings.  For more details see the project page.  For all
+			BEMCheckBox features see the BEMCheckBox page at: https://github.com/Boris-Em/BEMCheckBox.</description>
+		<copyright>Copyright (c) 2017 Saturday Morning Productions Inc.</copyright>
+		<tags>xamarin ios xamrin-ios xamarin-ios-binding bemcheckbox checkbox</tags>
     </metadata>
     <files>
 		    <file src="SaturdayMP.XPlugins.iOS.BEMCheckBox\bin\Release\SaturdayMP.XPlugins.iOS.BEMCheckBox.dll" target="lib\Xamarin.iOS10" />