Fix(check_memory_by_ssh): use /proc/meminfo instead of free output
Fix(check_memory_by_ssh): use /proc/meminfo instead of free output

Fix code from https://github.com/naparuba/check-linux-by-ssh/issues/30#issuecomment-229888794

Author: https://github.com/dguenault

naparuba/check-linux-by-ssh