Edited appendix.
Fix merge conflicts.

Merge branch 'master' of https://github.com/DMSwan/PIREstimators

Conflicts:
	4-Methods-Appendix/4-PIR-Methods-Appendix.Rnw
	4-Methods-Appendix/4-PIR-Methods-Appendix.log
	4-Methods-Appendix/4-PIR-Methods-Appendix.pdf
	4-Methods-Appendix/4-PIR-Methods-Appendix.synctex.gz
	4-Methods-Appendix/4-PIR-Methods-Appendix.tex
	4-Methods-Appendix/figure/relative-accuracy.pdf