add descriptions

bin/zeppelin-daemon.sh

@@ -68,7 +68,7 @@ if [[ -d "${ZEPPELIN_HOME}/zeppelin-server/target/classes" ]]; then
 fi
 
 # Add jdbc connector jar
-ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/jdbc/jdbc/postgresql-9.4-1204.jdbc4.jar"
+# ZEPPELIN_CLASSPATH+=":${ZEPPELIN_HOME}/jdbc/jdbc/connector jar"
 
 addJarInDir "${ZEPPELIN_HOME}"
 addJarInDir "${ZEPPELIN_HOME}/lib"

jdbc/src/main/java/org/apache/zeppelin/jdbc/JDBCInterpreter.java

@@ -44,15 +44,15 @@ import com.google.common.collect.Sets;
 import com.google.common.collect.Sets.SetView;
 
 /**
- * PostgreSQL interpreter for Zeppelin. This interpreter can also be used for accessing HAWQ and
- * GreenplumDB.
+ * JDBC interpreter for Zeppelin. This interpreter can also be used for accessing HAWQ,
+ * GreenplumDB, MariaDB, MySQL, Postgres and Redshit.
  * 
  * <ul>
- * <li>{@code postgresql.url} - JDBC URL to connect to.</li>
- * <li>{@code postgresql.user} - JDBC user name..</li>
- * <li>{@code postgresql.password} - JDBC password..</li>
- * <li>{@code postgresql.driver.name} - JDBC driver name.</li>
- * <li>{@code postgresql.max.result} - Max number of SQL result to display.</li>
+ * <li>{@code jdbc.url} - JDBC URL to connect to.</li>
+ * <li>{@code jdbc.user} - JDBC user name..</li>
+ * <li>{@code jdbc.password} - JDBC password..</li>
+ * <li>{@code jdbc.driver.name} - JDBC driver name.</li>
+ * <li>{@code jdbc.max.result} - Max number of SQL result to display.</li>
  * </ul>
  * 
  * <p>

jdbc/src/test/java/org/apache/zeppelin/jdbc/JDBCInterpreterTest.java

@@ -45,7 +45,7 @@ import com.mockrunner.mock.jdbc.MockConnection;
 import com.mockrunner.mock.jdbc.MockResultSet;
 
 /**
- * PostgreSQL interpreter unit tests
+ * JDBC interpreter unit tests
  */
 public class JDBCInterpreterTest extends BasicJDBCTestCaseAdapter {