Created Website and Page entities.
Added Mocks in tests. Added PageManager methods
Added meta attributes to Page.
Merge branch 'develop' into master - v0.1.0
Renamed PageMapper in PageRepository. Added PageStructure class.
Added Users entity and UserManager.
Removed password encryption from UserManager. Improved tests.
Added Menu / MenuItem entities and MenuManager.
Improved PageManager. Added page in MenuManager.
Merge branch 'develop' into master - v0.2.0
Fixed a bug when editing a page URI.
Added readme, roadmap and travis.yml configuration file.
Updated composer.json and README.md
Merge branch 'develop' into master - v0.2.1