fltk 0.6.0

Rust bindings for the FLTK GUI library
Documentation
# Examples

Each file is standalone executable with a main function. Examples vary from basic hello world simplicity to some more complex things. They may contain logic bugs, however their purpose is for demonstration only. If you would like to contribute fixes, improvements or more example, you're welcome to do so.

To run the examples: 
```
$ cargo run --example editor
$ cargo run --example calculator
$ cargo run --example gallery
$ cargo run --example terminal
$ cargo run --example counter
$ cargo run --example hello
$ cargo run --example hello_button
$ cargo run --example paint
$ cargo run --example glwindow
$ cargo run --example <filename>
```