Updating json files to pin versions and build.cmd to pin KoreBuild and DNX

Author: pranavkm

build.cmd

@@ -2,10 +2,10 @@
 cd %~dp0
 
 SETLOCAL
-SET NUGET_VERSION=latest
+SET NUGET_VERSION=v3.2.0
 SET CACHED_NUGET=%LocalAppData%\NuGet\nuget.%NUGET_VERSION%.exe
-SET BUILDCMD_KOREBUILD_VERSION=""
-SET BUILDCMD_DNX_VERSION=""
+SET BUILDCMD_KOREBUILD_VERSION=0.2.1-beta8
+SET BUILDCMD_DNX_VERSION=1.0.0-beta8
 
 IF EXIST %CACHED_NUGET% goto copynuget
 echo Downloading latest version of NuGet.exe...

src/Microsoft.AspNet.Hosting.Abstractions/project.json

@@ -1,13 +1,13 @@
 {
-    "version": "1.0.0-*",
+    "version": "1.0.0-beta8",
     "description": "ASP.NET 5 Hosting abstractions.",
     "repository": {
         "type": "git",
         "url": "git://github.com/aspnet/hosting"
     },
     "dependencies": {
-        "Microsoft.AspNet.Http.Abstractions": "1.0.0-*",
-        "Microsoft.AspNet.FileProviders.Abstractions": "1.0.0-*"
+        "Microsoft.AspNet.Http.Abstractions": "1.0.0-beta8",
+        "Microsoft.AspNet.FileProviders.Abstractions": "1.0.0-beta8"
     },
     "frameworks": {
         "dnx451": {},