Add base dub package description
Core compilation fixes
CL_INVALID_GL_SHAREGROUP_REFERENCE_KHR error is added
cl and gl interop example
Compilation fails are fixed under Windows. Direct3D related fixes
Linking to local OpenCL lib
Example is now operational on windows platform.

Some problem has occured with wrapper invariant. Now invariant is called
even before opAssign, that makes it fail every time new wrapper is
created. See https://issues.dlang.org/show_bug.cgi?id=5058
Update dub.json

Build configuration with NO_CL_EXCEPTIONS version
Update and rename README.creole to README

Adding examples to use the package through dub. Moving to markdown to highlight code snippets
Rename README to README.markdown
Update README.markdown
Remove old build scripts
Constant writing to console in debug builds is slowing graphic output
and don't allow to read other debug messages while using cl4d as
dependency.

To enable old behavior, explicit version CL4D_VERBOSE should be passed
to compiler.
Bug fix: getStringInfo was returning zero ended strings
Adding verbose version for "common" library configuration, without that
dub compiles "cl4d-noexc" version.
Removing remnant of old viewport updating
Assert -> enforce to preserve side-effect
Removing no sence comment
rename package to cl4d
cleanup