get_render_target fix
Travis build fix
switched export order
Upgraded to latest Rust-Empty
Timer needed unsafe_destructor annotation
Update to latest rust.
Upgrade to latest Rust
Merge pull request #152 from seemk/get_rt_fix

Render target + Travis fix
Merge pull request #153 from bvssvni/master

Upgraded to latest Rust-Empty
Merge pull request #155 from FredericHeihoff/timer_unsafe_destructor_fix

Timer needed unsafe_destructor annotation
Merge pull request #157 from luqmana/master

Update to latest rust.