improve readme usage instructions

Readme.md

@@ -4,27 +4,19 @@ Access nalanda from your terminal.<br>
 ![nalanda-cli](screenshots/demo.jpg)<br>
 
 ## Requirements:
- - Ubuntu 16.04 or later
- - Python2.7
- - pip
+ - python 3
+ - pip (for python 3)
 
 ## Installation:
  - Clone the repository. Open it a terminal and run install: <br>
-```shell
-./install 
-```
- -  Inputs:
-    1. Enter your BITS ID -<br>
-Eg: if your ID is 2016A7PS0015P, type in
     ```shell
-    f2016015
+    ./install
     ```
-    2. Enter your nalanda password.
-
 ![Installation](screenshots/install.jpg)<br>
 
 ## Usage:
 To see Nalanda updates or download the slides, open a terminal and type:
 ```shell
 nalanda
 ```
+The slides will be downloaded in the `~/BITS` folder