Travis: remove Node.js 0.6 and 0.8 support.

Some of dependent modules for testing dropped the support of these
versions.

.travis.yml

@@ -3,8 +3,6 @@ language: node_js
 node_js:
   # Quote the version number as Travis will interpret 0.10 as 0.1 unless quoted.
   - "0.10"
-  - "0.8"
-  - "0.6"
 
 env:
   - CUBRID_VERSION=9.1.0

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Fix #15: When closing a query, if connection is reset, consider the request was successful.
 - Fix: mark the connection as closed only after closing the connection.
 - Doc: add Table of Contents to README documentation.
+- Travis: remove Node.js 0.6 and 0.8 support. Some of dependent modules for testing dropped the support of these versions.
 
 ## Version 2.2.1 (Feb 1, 2015)
 

README.md

@@ -587,7 +587,7 @@ Here is an example.
 
 Remember that the `callback` is optional in which case you should listen for events.
 
-Alternatively, for backward compatibility we still support `addQeury()` and `addNonQuery()` functions which we introduced in version 2.0.0.
+Alternatively, for backward compatibility we still support `addQuery()` and `addNonQuery()` functions which we introduced in version 2.0.0.
 
     var SQL_1 = "SELECT COUNT(*) FROM [code]";
     var SQL_2 = "SELECT * FROM [code] WHERE s_name = 'X'";