Pytorch-ood

What's Changed
* Fixed bug in torchtext examples
* Added contribution instructions
* Added DICE Detector
* Added ReAct Detector
* Added SHE Detector
* Added Temperature Scaling Detector
* Added RMD Detector
* Added ASH Detector
* General Documentation Improvements


**Full Changelog**: https://github.com/kkirchheim/pytorch-ood/compare/0.1.4...0.1.5

What's Changed
* Improved MCHAD and CAC examples, minor fixes by kkirchheim in https://github.com/kkirchheim/pytorch-ood/pull/15
* Updated torchmetrics version by kkirchheim in https://github.com/kkirchheim/pytorch-ood/pull/17
* Added some datasets from OpenOOD by kkirchheim in https://github.com/kkirchheim/pytorch-ood/pull/18


**Full Changelog**: https://github.com/kkirchheim/pytorch-ood/compare/0.1.3...0.1.4