Adds new examples on using the Glitch search with one and two glitches

docs/img/semi_coherent_glitch_search_corner.png

docs/img/semi_coherent_two_glitch_search_corner.png

docs/make_fake_data.md

examples/make_fake_data.py

examples/semi_coherent_glitch_search.py

examples/semi_coherent_two_glitch_search.py

pyfstat.py