Update README and Travis CI files

Author: Joohwan Oh

.travis.yml

@@ -1,4 +1,5 @@
 language: python
+sudo: required
 python:
     - "2.7"
 before_install:

README.md

@@ -3,32 +3,25 @@ py-arango
 
 [![Build
 Status](https://travis-ci.org/Joowani/py-arango.svg?branch=master)](https://travis-ci.org/Joowani/py-arango)
-[![Documentation
-Status](https://readthedocs.org/projects/py-arango/badge/?version=latest)](https://readthedocs.org/projects/py-arango/?badge=latest)
 
-Driver for ArangoDB REST API
+Python Driver for ArangoDB REST API
 
 Overview
 --------
 
-py-arango is a Python (2.7, 3.4) driver for ArangoDB
+py-arango is a Python 2.7 & 3.4 driver for ArangoDB
 (<https://www.arangodb.com/>)
 
-Documentation
--------------
-
-<http://py-arango.readthedocs.org/en/latest/>
-
 Installation
 ------------
 
--   Stable
+-   Stable (ArangoDB Version 2.5)
 
 ```bash
 sudo pip install py-arango
 ```
 
--   Latest
+-   Latest (ArangoDB Version 2.5)
 
 ```bash
 git clone https://github.com/Joowani/py-arango.git

setup_arangodb_2.5.sh

@@ -3,7 +3,7 @@
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 cd $DIR
 
-VERSION=2.5.5
+VERSION=2.5.4
 NAME=ArangoDB-$VERSION
 
 if [ ! -d "$DIR/$NAME" ]; then