transpose: add .md and .yml

[andrey-gvrd]

In reference to rust implementation exercism/rust#151

[petertseng]

The examples given seem to imply that the elements of the input should be transposed word-wise. For example, that:

Aaa Bbb Ccc
Ddd Eee Fff

would tranpose to;

Aaa Ddd
Bbb Eee
Ccc Fff

If I understand the test expectations in exercism/rust#151, it appears the transposition is instead character-wise. It would be good to make this clear in the readme so that there is no confusion. especially because character-wise may indicate that

A B C
D E F

is supposed to actually transpose to:

AD

BE

CF

which is not the same as what the example indicates.

---

Finally, it would indeed be good to get a file with common test cases.

[andrey-gvrd]

Fixed the example to remove the ambiguity.

[petertseng]

why space?

[IanWhitney]

I think this is ready. Will merge on Monday, July 18 unless someone says otherwise.

[kytrinyx]

Thank you!