vscode Intellisense not working

I just downloaded visual studio code for linux ubuntu 14.04. I created a simple test.cpp and wrote it in vscode and the intellisense did not work.

Here is the code inside test.cpp:

struct test{
    int a = 5;
}

int main(){
    test t;
    t.
}

There was no intellisense telling me the members of t when I wrote "t." and there should have been.

I created the test.cpp file in the linux terminal with the command "touch test.cpp" then I opened test.cpp with visual studio code and wrote the code. A screenshot can be seen here: http://i.stack.imgur.com/fLhSA.png

Anyone know how to get intellisense working for vscode in linux?