Change identity to eth address

[etienne-napoleone]

closes #38

[coveralls]

Pull Request Test Coverage Report for Build 221

• 8 of 11 (72.73%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.2%) to 72.884%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
tmn/configuration.py	8	11	72.73%

Totals
Change from base Build 219:	-0.2%
Covered Lines:	422
Relevant Lines:	579

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 225

• 8 of 11 (72.73%) changed or added relevant lines in 1 file are covered.
• 5 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+2.2%) to 75.26%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
tmn/configuration.py	8	11	72.73%

Files with Coverage Reduction	New Missed Lines	%
tmn/display.py	1	90.48%
tmn/elements/service.py	2	67.96%
tmn/tmn.py	2	69.66%

Totals
Change from base Build 219:	2.2%
Covered Lines:	435
Relevant Lines:	578

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💛 - Coveralls