Add packaging files

Author: ethanhann

.gitignore

@@ -186,3 +186,6 @@ FakesAssemblies/
 
 # NuGet
 *.nupkg
+
+.DS_Store
+

package.sh

@@ -0,0 +1 @@
+nuget pack src/InEngine.Core/InEngine.Core.csproj -Prop Configuration=Release -Prop Platform=AnyCPU

src/InEngine.Core/InEngine.Core.csproj

@@ -99,6 +99,7 @@
   <ItemGroup>
     <None Include="packages.config" />
     <None Include="job_scheduling_data_2_0.xsd" />
+    <None Include="InEngine.Core.nuspec" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Exceptions\" />

src/InEngine.Core/InEngine.Core.nuspec

@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<package >
+  <metadata>
+    <id>$id$</id>
+    <version>$version$</version>
+    <title>$title$</title>
+    <authors>$author$</authors>
+    <owners>$author$</owners>
+    <licenseUrl>https://github.com/InEngine-NET/InEngine.NET/blob/master/LICENSE</licenseUrl>
+    <projectUrl>https://github.com/InEngine-NET/InEngine.NET</projectUrl>
+     <iconUrl>http://inengine.net/images/inengine-logo-32.png</iconUrl>
+    <requireLicenseAcceptance>true</requireLicenseAcceptance>
+    <description>The heart of InEngine.NET.</description>
+    <releaseNotes>https://github.com/InEngine-NET/InEngine.NET/releases/tag/3.0.0</releaseNotes>
+    <copyright>Copyright 2017</copyright>
+    <tags>Integration Scheduling Server Quartz.NET Redis</tags>
+  </metadata>
+</package>