Update README.md

README.md

+OrderMatching
+======
+CS682 Assignment
+
+## Description
+This assignment is intended to solve the problem of order matching in stock exchange markets.
+
+The repository includes the following files:<br/>
+StockExchange.java - Processes the requests from users and updates the pending list.<br/>
+Matcher.java - Takes the present input and compares it with the transactions in the pending list.<br/>
+Transaction.java - Plain old java Object that represents a transaction.<br/>
+StockExchangeTest.java - Junit test
+
+## Assumptions:
+1. Application assumes space separated input transactions.
+2. Time is represented as an integer.
+3. Customer cannot trade with himself.
+
+## Running Instructions:
+Run the Junit test with desired test cases.
+