Update version

Author: mhegazy

package.json

@@ -2,7 +2,7 @@
     "name": "typescript",
     "author": "Microsoft Corp.",
     "homepage": "http://typescriptlang.org/",
-    "version": "1.5.0",
+    "version": "1.5.0-alpha",
     "licenses": [
         {
             "type": "Apache License 2.0",

src/compiler/program.ts

@@ -8,7 +8,7 @@ module ts {
     /* @internal */ export let ioWriteTime = 0;
 
     /** The version of the TypeScript compiler release */
-    export let version = "1.5.0";
+    export let version = "1.5.0-alpha";
 
     export function findConfigFile(searchPath: string): string {
         var fileName = "tsconfig.json";