Update compilationOptions -> buildOptions (#384)

Author: jamesqo

src/coreclr-debug/main.ts

@@ -328,7 +328,7 @@ function createProjectJson(targetRuntime: string): any
 {
     let projectJson = {
         name: "dummy",
-        compilationOptions: {
+        buildOptions: {
             emitEntryPoint: true
         },
         dependencies: {
@@ -393,4 +393,4 @@ function spawnChildProcess(process: string, args: string[], channel: vscode.Outp
     });
 
     return promise;
-}
+}