Readme update.

README.md

@@ -4,19 +4,25 @@ An **oscilloscope** is a laboratory instrument commonly used to display and anal
 
 A **XY Plotter** is an instrument to plot a voltage variable with respect to another voltage variable. This is in contrast to the oscilloscope which plots a voltage variable with respect to time.
 
-This python library can turn your **Raspberry Pi** into an Oscilloscope or XY plotter. Simply, interface an **Analog to Digital Converter** with your Raspberry Pi and use the library to view the analog signals on your Raspberry Pi. Currently, the library supports Adafruit ADS1015 breakout board. 
+This python library can turn your **Raspberry Pi** into an Oscilloscope or XY plotter. Simply, interface an **Analog to Digital Converter** with your Raspberry Pi and use the library to view the analog signals on your Raspberry Pi. Currently, the library supports Adafruit ADS1015 breakout board.
 
-![alt text](https://learn.adafruit.com/system/guides/images/000/000/195/medium800/summary.jpg "Raspberry Pi with ADS1015")
+
+![](https://learn.adafruit.com/system/guides/images/000/000/195/medium800/summary.jpg)
+*Raspberry Pi with ADS1015*
 
 ## Motivation
 Oscilloscope are costly, bulky. I wanted to monitor analog sensors on Raspberry Pi and I didn't had an actual oscilloscope. Not exactly precise, but it could be very helpful for most applications.
 
 ## Dependencies
+
 *Hardware*
+
 1. Raspberry Pi B/B+/2
+
 2. [ADS1015 Breakout board Analog to Digital converter](http://www.adafruit.com/product/1083)
 
 *Software*
+
 1. Python 2.7
 
 The following python modules are needed in order to use this library:
@@ -38,8 +44,11 @@ $ sudo i2cdetect -y 1
 ```
 
 If you need help in interfacing, check out the official documentation from Adafruit:
+
 https://learn.adafruit.com/adafruits-raspberry-pi-lesson-4-gpio-setup/configuring-i2c
+
 https://learn.adafruit.com/adafruit-4-channel-adc-breakouts/
+
 https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code 
 
 ## Usage