added tf 1.x version in colab notebook

[amrzv]

Hi.
Added magic %tensorflow_version 1.x in notebook, now it works well (tested in google colab).
Related to issue #12 and maybe this #3

[amir-Devil]

hi.
i try to run demo in colab.
but right now , there is an error when i try to do this.

'ValueError: Tensorflow 1 is unsupported in Colab.'

I would be very grateful if you could guide me.

[amrzv]

Seems that tensorflow 1.x is deprecated in colab env, so this repo is outdated.
One way is to port the whole project in tensorflow 2.x if you want to use it in colab or you can always use a notebook locally.