Added warnings and disclaimed about libmagic install and Cannot return the results in a contigious 2D array. Probably ef or M is too small error from similarity_search

[cobbvanth]

Updated the documentation to better explain easy to run into errors surrounding Libmagic and Cannot return the results in a contigious 2D array. Probably ef or M is too small error from similarity_search.

Had to find out about these the hard way, so hopefully this helps new users :)

[hwchase17]

the libmagic warning is in the srt notebook - but it should be in the unstructured one right? i think thats the loader that uses libmagic

[dev2049]

seems to be stale so will close, let me know if needs to be brought back