LRDOCS-1167 Converted devGuide section on creating hooks to a tutorial and migrated images.
fixed Next Steps URLs.
Merge branch 'LRDOCS-1167' of https://github.com/mwilliams2014/liferay-docs into pr-203-lrdocs-1167-creating-a-hook
LRDOCS-1167 Edit instructions for creating a hook plugin project
LRDOCS-1167 Remove hooks file structure image
LRDOCS-1167 Header ID
Merge branch 'pr-203-lrdocs-1167-creating-a-hook' of git://github.com/jhinkey/liferay-docs into wordsmithing
Wordsmithing.