README: Added overview and a dependency

Author: kkpatel1

README.md

@@ -2,15 +2,18 @@
 ------------------------------
 
 ## Overview
-The module provides various sinks and widgets to allow interaction with the live simulation remotely over the network. The module was developed as a part of Google Summer of Code 2017.
+The module provides various sinks and widgets to allow interaction with the live GNU Radio applications remotely over the network. The module uses [Bokeh](https://bokeh.pydata.org/en/latest/)'s client API and streaming features. Using widgets and plots from Bokeh, the module enables the GUI for GNU Radio that renders in web browser. Just like `gr-qtgui`, it is fully integrated with GRC to allow easy use.
+
+The module was developed as a part of Google Summer of Code 2017.
 
 ## Dependency
 1. GNU Radio (should contain [commit@3c989f9](https://github.com/gnuradio/gnuradio/pull/1434))
 2. [Bokeh library](https://bokeh.pydata.org/en/latest/)
    (Tested on v0.12.06)
 3. Tornado v4.4
+4. NodeJS v6.6.x - v7.0
 
-## GNU Radio dependency
+### GNU Radio dependency
 Make sure you use most recent version of GNU Radio. If you are using v3.7.12, please make sure to use commit@3c989f9. It contains necessary changes in core GRC to enable the use of `gr-bokehgui`.
 
 ## Installation
@@ -57,7 +60,6 @@ The following Youtube video provides quick glance over the module and basic proc
 
 ### Minor tasks:
 1. Enable averaging in Frequency sink
-2. Change Waterfall orientation to top-bottom
 
 ## Bugs reporting:
 Kindly report any bugs or issues [on Github](https://github.com/kartikp1995/gr-bokehgui/issues/).