[DOCS] Add prerequisites about zlib1g-dev (#446)

* [DOCS] Add prerequisites about zlib1g-devin

Add prerequisites about zlib1g-dev. It occurs `/usr/bin/ld: cannot find -lz` without zlib1g-dev.

* Add prerequisites about python-setuptools 

Add prerequisites about python-setuptools. Otherwise, it will fail when executing `python setup install --user` command.

* [DOCS] Add prerequisites about python-dev

Add installation prerequisites about python-dev. Otherwise, it will fail with `SystemError: Cannot compile 'Python.h'. Perhaps you need to install python-dev|python-devel.` when executing `python setup install --user`.

docs/how_to/install.md

@@ -50,7 +50,7 @@ Install prerequisites first:
 
 ```bash
 sudo apt-get update
-sudo apt-get install -y python gcc libtinfo-dev
+sudo apt-get install -y python python-dev python-setuptools gcc libtinfo-dev zlib1g-dev
 ```
 
 The configuration of tvm can be modified by ```config.mk```