Add bin/bundler on .gitignore

Remove executables from github
Revert "Add bin/bundler on .gitignore"

This reverts commit 3fbb96178bc3e7bbcdd13c4a5549bf37f8369739.
Add bin/* on .gitignore

Remove all executables from github
Add robots executable

Add executable to execute program from its
instead of running ruby main.rb