Refactored the interface of the io package

lib/io/read.q

@@ -1,5 +1,9 @@
 import sys
 
-read(fd int, buffer []byte) -> int {
+read(buffer []byte) -> int {
+	return sys.read(std.in, buffer, len(buffer))
+}
+
+readFrom(fd int, buffer []byte) -> int {
 	return sys.read(fd, buffer, len(buffer))
 }