Updated the quickbook docs
Added initial version of oglplus::ClientContext
Refactoring of the client context
Added the EnumToClass helper template
Multiple changes

- Added default constructor to enums::EnumToClass.
- Changed the implementation of client::CurrentObjects.
Multiple changes

- Updated the ClientContext class.
- Added missing sampler function implementation.
Updated the ClientContext class

- Renamed some of the headers.
- Refactored some functions into the common ancestor.
- Reimplemented CurrentCapabilities by using oglplus::context.
- Added client::CurrentHints.
- Added client::DepthTest.
- Added client::LogicalOps.
Bugfix in texture + updates in shapes::Revolve

- Fixed Texture::Active.
- Added support for GL without GL_PRIMITIVE_RESTART.
Minor updates in ClientContext
Multiple changes in ClientContext

- Refactored some functions into the common ancestor.
- Added client::ViewportOps.
Multiple changes related to ClientContext

- Updated one of the examples to use ClientContext instead of Context.
- Refactored some functionality into the common ancestor.
- Added wrappers for drawing and computing operations.
Multiple changes related to ClientContext
Merge branch 'develop' into develop-with-eagine
Updated the ClientContext to C++11/14