Pull requests instruction

1. Put the bibtex in awesome-NeRF/citations/<YOUR-PROJECT>.txt.
2. Modify the README and follow the format TITLE, AUTHOR, CONFERENCE YEAR | OPTIONAL LINK | BIBTEX. For example:

• NeRF: Representing Scenes as Neural Radiance Fields for View Synthesis, Mildenhall et al., ECCV 2020 | github | bibtex