Merge pull request #5 from faizulhaque/master

removeArrayItem (models/mongo.js)
mysql class replaced
Merge pull request #6 from faizulhaque/master

trim() added into isEmpty function.
Merge pull request #7 from faizulhaque/master

getCount function added
init event exposed for child for extension of functionality if required
find method fix 1
mongo prepareSelectClause fix
validation isEmpty fix (trim)
fix isEmpty 2
Charset fix node-mysql updated
npm published ver change
knex client exposed
mysql fix fetch
mysql fix getDBObject
mongo db minor change on update method and some jslint fixes
minor fix mongodb model
check if input null on getInBatch
 memcache expiration value fix
knex package updated
undefined column fix