utils module has been updated

lib/utils.zsh

@@ -1,3 +1,4 @@
+# Returns the pid of process in charge of the given port
 pid_for() {
     echo $(ss -lptn "sport = :$1")
     echo "---------\n"
@@ -7,6 +8,7 @@ pid_for() {
 
 }
 
+# Prints out the difference between file1 and file2
 intersect_files() {
     comm -23 <(sort $1) <(sort $2)
 }