diff --git a/Owin.Security.Providers/Owin.Security.Providers.csproj b/Owin.Security.Providers/Owin.Security.Providers.csproj
index e03c577..1e6063d 100644
--- a/Owin.Security.Providers/Owin.Security.Providers.csproj
+++ b/Owin.Security.Providers/Owin.Security.Providers.csproj
@@ -144,6 +144,15 @@
     <Compile Include="Foursquare\Provider\FoursquareReturnEndpointContext.cs" />
     <Compile Include="Foursquare\Provider\IFoursquareAuthenticationProvider.cs" />
     <Compile Include="GitHub\Constants.cs" />
+    <Compile Include="Gitter\Constants.cs" />
+    <Compile Include="Gitter\GitterAuthenticationExtensions.cs" />
+    <Compile Include="Gitter\GitterAuthenticationHandler.cs" />
+    <Compile Include="Gitter\GitterAuthenticationMiddleware.cs" />
+    <Compile Include="Gitter\GitterAuthenticationOptions.cs" />
+    <Compile Include="Gitter\Provider\GitterAuthenticatedContext.cs" />
+    <Compile Include="Gitter\Provider\GitterAuthenticationProvider.cs" />
+    <Compile Include="Gitter\Provider\GitterReturnEndpointContext.cs" />
+    <Compile Include="Gitter\Provider\IGitterAuthenticationProvider.cs" />
     <Compile Include="HealthGraph\Constants.cs" />
     <Compile Include="GitHub\GitHubAuthenticationExtensions.cs" />
     <Compile Include="GitHub\GitHubAuthenticationHandler.cs" />
diff --git a/OwinOAuthProviders.sln b/OwinOAuthProviders.sln
index 0f05d64..c9cd1a7 100644
--- a/OwinOAuthProviders.sln
+++ b/OwinOAuthProviders.sln
@@ -1,12 +1,17 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2013
-VisualStudioVersion = 12.0.30723.0
+# Visual Studio 14
+VisualStudioVersion = 14.0.22823.1
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OwinOAuthProvidersDemo", "OwinOAuthProvidersDemo\OwinOAuthProvidersDemo.csproj", "{5A438007-0C90-4DAC-BAA1-54A32164067F}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Owin.Security.Providers", "Owin.Security.Providers\Owin.Security.Providers.csproj", "{6AD9BA00-1330-426D-8BAE-2D3BC0D976E4}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{BF6144CD-2B61-456D-9F7E-A899F6DD850A}"
+	ProjectSection(SolutionItems) = preProject
+		.gitignore = .gitignore
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
diff --git a/README.md b/README.md
index 8b33d65..fb20fdd 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ Provides a set of extra authentication providers for OWIN ([Project Katana](http
   - Flickr
   - Foursquare
   - GitHub
+  - Gitter
   - Google+
   - HealthGraph
   - Instagram