add badge and fix typos

Author: llouislu

README.md

@@ -1,13 +1,15 @@
 # T-SQL Diff
 Compare Difference In T-SQL Queries at Runtime
 
+![CI Status](https://travis-ci.org/llouislu/tsql-diff.svg?branch=master) ![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)
+
 ## Install
 1. Go to [release](https://github.com/llouislu/tsql-diff/releases) and download the latest version.
 2. execute install.sql in your target database.
 
 ## Uninstall
 Execute this stored procedure.
-```
+```sql
 EXEC Diff.Uninstall;
 ```
 
@@ -28,7 +30,7 @@ DECLARE @status_code INT;
 EXEC @status_code = Diff.Compare 'path/to/query1.sql', 'path/to/query2.sql';
 ```
 
-### Compare  paris of queries in a folder
+### Compare pairs of queries in a folder
 ```sql
 declare @status_code INT;
 exec Diff.ComapreFolder @FolderPath='/root/data/t', @ModifierName='Model'