[#283] Add code example to show how to use token in tokens page of demo app #297

12 / 14 tasks completed (+2 optional)

2 tasks still to be completed (+2 optional)

Task	Status
New feature (non-breaking change which adds functionality)	Incomplete
I have read the contributing guidelines	Completed
My change follows accessibility good practices	Completed
My change respects the design guidelines of Orange Unified Design System	Completed
My change follows the developer guide	Completed
I checked my changes do not add new SwiftLint warnings	Completed
My change introduces changes to the documentation and/or I have updated the documentation accordingly	Completed
The evolution have been tested and the project builds for iPhones and iPads	Completed
Code review has been done by reviewers according to CODEOWNERS file	Completed
Design review has been done	Incomplete
Accessibiltiy review has been done	Completed
Q/A team has tested the evolution	Incomplete
Documentation has been updated if relevant	Completed
Internal files have been updated if relevant (like CONTRIBUTING, DEVELOP, THIRD_PARTY, CONTRIBUTORS, NOTICE)	Completed
CHANGELOG has been updated respecting keep a changelog rules and reference the issues	Completed
form-chevron-down.png	Incomplete
form-chevron-up.png	Incomplete
ic_copy.png	Incomplete
ic_chevron-down.svg	Incomplete
ic_chevron-upsvg	Incomplete
ic_copy.svg	Incomplete

Task	Status
I have added unit tests to cover my changes (optional)	Incomplete
The wiki has been updated if needed (optional)	Incomplete