Replace current SES with new SES using AWS-SDK

The new SES use the aws-sdk node module that wraps
all the HTTP requests to SES servers. It allow the usage
of IAM roles instead of AWS credentials.
Merge pull request #278 from Elanorr/useAwsSdk

New SES option with aws-sdk module
Fix AWS-SES usage
Bumped version to v0.7.0
Restarted development for 1.0
Nodemailer.sendMail should be purely asynchronous.
Merge pull request #285 from jsdevel/forcing-async-in-sendMail

Nodemailer.sendMail should be purely asynchronous.
Fixes spelling mistake, SMPT -> SMTP
Merge pull request #288 from boboman13/master

Fixes spelling mistake, SMPT -> SMTP. Fixes #281
Upgrade aws-sdk to 2.0.5
Release candidate 1 for Nodemailer 1.0
added missing install instruction
updated readme
updated readme, added info about pickup
updated readme
Updated README
removed beta notice
Merged v1.0 to master
Bump version to 1.0.0
Implemented missing transport.close method. Bumped version to 1.0.1