Add Redis.io code examples

- Add set & get example
- Use bash script to test doc tests
- Add package.json to doctests
- Add search-quickstart

doctests/run_examples.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+
+basepath=`readlink -f $1`
+if [ $? -ne 0 ]; then
+basepath=`readlink -f $(dirname $0)`
+fi
+echo "No path specified, using ${basepath}"
+
+set -e
+cd ${basepath}
+for i in `ls ${basepath}/*.js`; do
+    redis-cli flushdb
+    node $i
+done