update examples

.gdbinit

.gitignore

Cargo.toml

README.md

examples/full-syntax.rs

examples/nested.rs

examples/one-task.rs

examples/preemption.rs

examples/two-tasks.rs

macros/Cargo.toml

macros/src/check.rs

macros/src/lib.rs

src/examples/_1_one_task.rs

src/examples/_2_two_tasks.rs

src/examples/_3_preemption.rs

src/examples/_4_nested.rs

src/examples/_6_full_syntax.rs

src/lib.rs