Removed absurd if-statement; 1 gitignore addition

Even if no previous command had run in bash, $? can never be null.
I removed an if statement that would therefore never execute and
only serve to mislead.

As an additional change, I added *.swp to gitignore to make sure
I don't do anything silly with ctrl-z'ed vim instances.
Restructured curl command that POSTs to pushbullet