Compiled binaries are listed in the `git status` output

Here is the output of the `git status -sbu` command after running the compilation:
```
$ git status -sbu
## master...origin/master
?? bin/demo_create
?? bin/demo_destroy
?? bin/demo_get
?? bin/demo_query
?? bin/tests
```
Compiled binaries, being a derived product of source code, need to be ignored. Otherwise, there is a risk of accidentally committing them into Git. 