update .gitignore
nothing really
just boring formatting
Add random number seed as optional user setting.

Mostly for debugging. If no seed is provided, use the system clock.

I noticed that:

srand(time(NULL));

was used multiple times in both:

main.cpp
siman_cal_par.cpp

so that analyses could not be replicated. Since srand is called in main, it doesn't need to be called again anywhere else. I've therefore commented-out all but the first occurrence.
formatting only
Fix to badly-formed tree bug.

Bug here: https://github.com/blackrim/treePL/issues/3

This fix:

1) removes rightwise whitespace
2) checks if the last character in the trimmed string is a semicolon.
minor: count trees
start to parallel over trees. now broke
Revert to bd330b1c72b617dd4f7119c1f4d0277985d0f4a9
fix error with character comparison
Merge pull request #9 from josephwb/master

Fix to badly-formatted tree and random number seed