LRDOCS-329 Added instructions for configuring the SAML 2.0 EE app on Liferay 6.2
LRDOCS-329 Added note that it's possible to configure Liferay as IdP or SP via portal-ext.properties but it's recommended to use the SAML Control Panel interface since it marks required fields and validates some fields
Merge pull request #733 from jrao/LRDOCS-329

https://issues.liferay.com/browse/LRDOCS-329