az-shell command isn't executable by default

[yokawasa]

I've installed azure-cli-shell-0.1.1rc2 in my linux box and noticed that az-shell command isn't executable by default.

 $ az-shell
zsh: permission denied: az-shell
 $ ls -la $HOME/.local/bin/az-shell
-rw-rw-r-- 1 yoichika yoichika 494 Apr 11 08:40 /home/yoichika/.local/bin/az-shell

Of course i can run az-shell after I added executable permission but it would be better if it's executable by default
My environment is:

module: azure-cli-shell-0.1.1rc2
OS:

 $ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 15.10
Release:        15.10
Codename:       wily

Pythonv version:

 $ python --version
Python 2.7.10