-Added dotnet build

-Removed WinRT files
-Updated solution files to VS2015
-Updated psake

Tools/PSake/psake.psm1

@@ -315,7 +315,7 @@ function Invoke-psake {
     )
     try {
         if (-not $nologo) {
-            "psake version {0}`nCopyright (c) 2010-2014 James Kovacs & Contributors`n" -f $psake.version
+            "psake version {0}`nCopyright (c) 2010-2015 James Kovacs, Damian Hickey & Contributors`n" -f $psake.version
         }
 
         if (!$buildFile) {
@@ -580,10 +580,15 @@ function ConfigureBuildEnvironment {
         '4.0' {
             $versions = @('v4.0.30319')
         }
-        '4.5.1' {
+        {($_ -eq '4.5.1') -or ($_ -eq '4.5.2')} {
             $versions = @('v4.0.30319')
             $buildToolsVersions = @('14.0', '12.0')
         }
+        '4.6' {
+            $versions = @('v4.0.30319')
+            $buildToolsVersions = @('14.0')
+        }
+
         default {
             throw ($msgs.error_unknown_framework -f $versionPart, $framework)
         }
@@ -838,7 +843,7 @@ convertfrom-stringdata @'
 import-localizeddata -bindingvariable msgs -erroraction silentlycontinue
 
 $script:psake = @{}
-$psake.version = "4.4.1" # contains the current version of psake
+$psake.version = "4.4.2" # contains the current version of psake
 $psake.context = new-object system.collections.stack # holds onto the current state of all variables
 $psake.run_by_psake_build_tester = $false # indicates that build is being run by psake-BuildTester
 $psake.config_default = new-object psobject -property @{
@@ -857,4 +862,4 @@ $psake.build_script_dir = "" # contains a string with fully-qualified path to cu
 
 LoadConfiguration
 
-export-modulemember -function Invoke-psake, Invoke-Task, Task, Properties, Include, FormatTaskName, TaskSetup, TaskTearDown, Framework, Assert, Exec -variable psake
+export-modulemember -function Invoke-psake, Invoke-Task, Task, Properties, Include, FormatTaskName, TaskSetup, TaskTearDown, Framework, Assert, Exec -variable psake