Update TestLinkAPI.py

Fixing getTestCaseAttachments parameter name to lowercase
Merge pull request #2 from g4l4drim/patch-1

Update TestLinkAPI.py
Merge https://github.com/orenault/TestLink-API-Python-client

Conflicts:
	src/testlink/testlinkapi.py
resolved missed merge conflict
Merge tag 'rc4-conflict-solved'

RC4 Merge Conflict solved by Anton
comments for changed server_url (TestLink 1.9.7)
Version set to 0.4.0