Add init_args() function and get some argument from it for issue #7.
Add unittest pattern of init_args with default and const.
Add xively-python to requirement list to fix error at travis build #9 fail.
Add --allow-external option to pip command to fix
Add --allow-external option to pip command to fix travix error.
Add --allow-external option to pip command to fix travis error.
Add install script for travis environment and remote requirements text file.

Conflicts:
	.travis.yml
	server/requirements.txt
Remove ports argument.
Add unit test pattern for -l and -d.
Merge branch 'issue_7' to fix issue #7 and issue #15.