INT-3175 Add Caution About Apache HTTP Client

JIRA: https://jira.springsource.org/browse/INT-3175
INT-2953 Use Buffered In/Out Streams for Files

Wrap `FileInputStream` and `FileOutputStreams` with
`BufferedInputStream`, `BufferedOutputStream` respectively.

Also use `BufferedReader`, `BufferedWriter` to wrap `FileReader`, `FileWriter`.

JIRA: https://jira.springsource.org/browse/INT-2953
INT-2628 Add ObjectNamingStrategy to IMBE

Allow customization of the generated ObjectName for the
Integration components.

JIRA: https://jira.springsource.org/browse/INT-2628
INT-2628 Polishing

- Address PR comments
- Rename `naming-strategy` to `object-naming-strategy` for consistency with `object-name-static-properties`