Update / Modernize / Make examples work, etc.

[bakercp]

Hey @julapy, I have a student working with this library and it needed a bit of love to bring it up to date for 0.9.0+.

This PR makes the following changes/updates

• ofxQCAR compatible is now compatible with the new project generator (no need to manually add libVuforia.a or any of the system frameworks anymore). This was achieved by following the addon template and adding the addon_config.mk file.
• Added a few helpful readme files to describe the structure.
• Updated to Vuforia 5.5.9.
• Changed the singleton pointer to a static reference.
• Updated all examples to compile.
• Changed two example names to be more descriptive.

[bakercp]

There are still a few fixes I need to make w/ a phone attached. ...

[bakercp]

This should now compile correctly and also should incorporate additions from PR #12.

[bakercp]

Just an update, this isn't working perfectly yet. So, no need to review until we get a few things figured out ...

[chelinghao]

When using ios generator to regenerate the example, it will create five links. Have to delete those links and run the project.

[bakercp]

@chelinghao I think this is because the ios template in the 0.9.3 ios distribution is not up to date with the master template ... I was working off master, so I may have gotten ahead of myself.

[chelinghao]

Still have a problem when running the project, the AR function seems not working right now.

[chelinghao]

Hi @bakercp,
As you can see it does not println anything in the console which is strange comparing other example in ios, so I am doubt if the program actually running the code.

[julapy]

hey @bakercp! hope you're well.
thanks for the updates.
im a bit flat out for the next couple weeks,
but let me know when this PR is ready to merge and I'll give it a review.
cheers!

[bakercp]

Hey @julapy thanks for the attention -- we'll be working on it here and ping you when we get some of this stuff resolved.

Hope you're well!