#106 move integration tests for Attachments into a separate class.
Merge pull request #107 from taskadapter/ask-106-delete-attachments

#106 move integration tests for Attachments into a separate class.
move integration tests for Users and Projects to separate classes.
Update README.md
#108 better logging to debug a Redmine 2.4 issue
update redmine test config.

the URL, login and password are the same. I only updated the top-level comment
change API key for Redmine test server. I reverted Redmine back to 2.3.3
 - because 2.4.0 has a showstopper bug in REST API.
update redmine test config with the new API key
(reinstalled Redmine 2.3.3 again)
update test server properties.
#108 revert the previous commit for logging.
(this one :   #108 better logging to debug a Redmine 2.4 issue)

that commit was causing "stream already closed" exceptions.
use unique IDs in ParentProjectTest so that it does not fail
- otherwise it can fail when the previous test did not delete the temporary project
Merge remote-tracking branch 'upstream/master' into customField-projects

Conflicts:
	src/test/java/com/taskadapter/redmineapi/ParentProjectTest.java