[MINOR] Add few comments

QIR/src/qir/driver/QIRDriver.java

@@ -5,8 +5,8 @@ import qir.ast.data.*;
 import qir.util.*;
 
 /**
- * TODO: Add interface to stream results; add interface to get database info (table exists?, table
- * schema, ...).
+ * WORK IN PROGRESS: TODO: Add interface to stream results; add interface to get database info
+ * (table exists?, table schema, ...).
  */
 public class QIRDriver {
     private final DBDriver defaultDriver;

QIR/src/qir/factory/DBDriverFactory.java

@@ -5,6 +5,9 @@ import java.sql.*;
 import qir.driver.*;
 import qir.driver.OracleDriver.ConnectionData;
 
+/**
+ * WORK IN PROGRESS
+ */
 public class DBDriverFactory {
     public static DBDriver createDBDriver(String dbName, String sessionId, String serverName, int port, String userName, String passwd) {
         if (dbName.equalsIgnoreCase("Oracle"))