Automated build setup

I made simple changes to make where we can do 1-off builds
- Setup projects to put their XML documentation in docs\
- Removed alot of projects from sln
- Updated .gitignore

Author: Jonathan Peppers

.gitignore

@@ -38,6 +38,7 @@ AndroidNative/FormsViewGroup/gen/com/xamarin/formsviewgroup/R.java
 AndroidNative/FormsViewGroup/gen/com/xamarin/formsviewgroup/BuildConfig.java
 *.psess
 TestResults/
+AppPackages/
 Xamarin.Forms.UITest.Validator/UITestCoverage/index.html
 !Xamarin.Forms.UITest.TestCloud/test-cloud.exe
 Xamarin.Forms.ControlGallery.Windows/AppPackages/

Xamarin.Forms.Core/Xamarin.Forms.Core.csproj

@@ -31,6 +31,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <DocumentationFile>..\docs\Xamarin.Forms.Core.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Turkey|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>

Xamarin.Forms.Xaml/Xamarin.Forms.Xaml.csproj

@@ -32,6 +32,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <ConsolePause>false</ConsolePause>
+    <DocumentationFile>..\docs\Xamarin.Forms.Xaml.xml</DocumentationFile>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Turkey|AnyCPU'">
     <DebugSymbols>true</DebugSymbols>