Fixed typo in Deprecation Policy section of Dev Guide
Added Next Steps section to Migrating to alloyui 2.0/bootstrap tutorial
LRDOCS-1068 Created a 'Understanding Liferay's Releases and Deprecation Policy' tutorial
Merge pull request #912 from jrao/LRDOCS-1068

https://issues.liferay.com/browse/LRDOCS-1068