This patch removes the usage of relative paths.
Author: Utkarsh Gupta <guptautkarsh2102@gmail.com>
Date: 05th March 2019
---

--- a/spec/parser_spec.rb
+++ b/spec/parser_spec.rb
@@ -1,4 +1,5 @@
-require File.join(File.dirname(__FILE__),'../lib/expression_parser')
+#require File.join(File.dirname(__FILE__),'../lib/expression_parser')
+require 'expression_parser'
 include ExpressionParser
 
 describe Parser do