Example command stated in UG does not work in app.

[nus-se-bot]

Describe the bug
There is an example command stated in the UG "memberAdd n/James Ong an/A0123456Y p/98765432 e/jamesong@example.com yos/year1 m/mathematics". But when it is entered in the app, there is an error "Invalid Command Format!"

To Reproduce
Steps to reproduce the behavior:

1. Launch app
2. enter "memberAdd n/James Ong an/A0123456Y p/98765432 e/jamesong@example.com yos/year1 m/mathematics"
3. See error "Invalid Command Format!"

Expected behavior
Add a member to the app.

Screenshots
If applicable, add screenshots to help explain your problem.

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Reported by: @PremBagda
Severity: Medium

_{[original: nus-cs2103-AY1819S2/pe-dry-run#111]}