Add badges and remove check for older php

Author: swashata

.travis.yml

@@ -18,8 +18,6 @@ env:
 # Define the php versions against we want to test our code
 php:
     - 7.0
-    - 7.1
-    - 5.6
 
 matrix:
   fast_finish: true

README.md

@@ -1,5 +1,7 @@
 # Number to Words PHP Class - Indian Version
 
+[![Build Status](https://travis-ci.org/swashata/php-number-to-word-india.svg?branch=master)](https://travis-ci.org/swashata/php-number-to-word-india) [![Code Climate](https://codeclimate.com/github/swashata/php-number-to-word-india/badges/gpa.svg)](https://codeclimate.com/github/swashata/php-number-to-word-india) [![Test Coverage](https://codeclimate.com/github/swashata/php-number-to-word-india/badges/coverage.svg)](https://codeclimate.com/github/swashata/php-number-to-word-india/coverage) [![Issue Count](https://codeclimate.com/github/swashata/php-number-to-word-india/badges/issue_count.svg)](https://codeclimate.com/github/swashata/php-number-to-word-india)
+
 This class converts numbers to Indian-English Words. Works for all kinds of
 numbers including floats. A few examples.