Setup.py for easier library compilation, and installation is streamli…

[btasdelen]

…ned and documented. Unnecessary build and binary files are removed.

[pkash16]

I made a few minor fixes, namely that the example config was out of date and we need to make sure directories exist before writing to them.

There is a bigger issue, however, that I haven't been able to resolve.

Somehow, seq.signature_value is empty after seq.write(). When following the breakpoint step by step, it seems that signature value is correctly written in pypulseq->Sequence->write_seq. However, when the scope leaves the write_seq function, self.signature_value becomes an empty string again (not sure why). This could be a pypulseq issue, but it makes our file name for trajectory be an empty string.

[pkash16]

Other than that, the compilation was very easy and smooth, and it just worked by following the instructions, which is great!

[pkash16]

OK I figured out this is a problem with a latest PR in PyPulseq: imr-framework/pypulseq#178

This commit seems to be the issue. In write_seq (line 40), I believe should be
self = self.remove_duplicates(in_place=True) intead of self = self.remove_duplicates() because it messes with the python reference of 'self' in later lines of code. Maybe you can resolve this in that repository. This PR looks great and I can merge.