Changing the documented jConnect Sybase Driver to an implementation that works

The jConnect Driver (as of version 7.0) has two package implementations for the Driver: 1) com.sybase.jdbcx.SybDataSource and 2) com.sybase.jdbc4.jdbc.SybDataSource .

If 1) is used then an exception is thrown from the HikariCP since it's looking for a default constructor that is not there.

Switching to 2) the driver starts up successfully and it's fully operational, therefore I'm changing this documentation line to reflect that.

ps. HikariCP version 2.3.8 as advised since jdk8

thanks,
Dimitrios

README.md

@@ -365,7 +365,7 @@ Here is a list of JDBC *DataSource* classes for popular databases:
 | Oracle           | Oracle       | oracle.jdbc.pool.OracleDataSource |
 | PostgreSQL       | pgjdbc-ng    | com.impossibl.postgres.jdbc.PGDataSource |
 | PostgreSQL       | PostgreSQL   | org.postgresql.ds.PGSimpleDataSource |
-| SyBase           | jConnect     | com.sybase.jdbcx.SybDataSource |
+| SyBase           | jConnect     | com.sybase.jdbc4.jdbc.SybDataSource |
 
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