Implement Dkim
Implement Footer
Implement Google Analytics
Implement Spam Check
change .gitignore
Resolve conflict for 'w092'

Conflicts:
	src/main/java/jp/co/flect/sendgrid/SendGridClient.java
	src/test/java/jp/co/flect/sendgrid/AppTest.java
Implement Dkim, Footer GoogleAnalytics, SpamCheck
Merge branch 'master' of https://github.com/shunjikonishi/sendgrid4j
delete .settings
Implement Dkim, Footer, GoogleAnalytics, SpamCheck
Add .setting to .gitignore
Merge branch 'master' of https://github.com/shunjikonishi/sendgrid4j
Change the AppTest to fix an error when Filter Settings(eventnotify) set
version less than 3.