Markdown format implemented in docs/magicword.md and docs/memcached.md
A section with helpful resources has been added in docs/Introduction.md
Whitespaces removed, Intoduction.md modified
Unnecessary whitespaces have been removed. Helpful resources section has been modified.
Headings fixed, Title changed in magicword.md
Title changed from "magicword.txt" to "Magic Words" in docs/magicword.md.
Some H1 headers changed to H2 in docs/memcached.md and docs/Introduction.md.
An unnecessary sentence removed in docs/Introduction.md.
Change-Id: I5c9e8663c922be4ca5f0eea9d5c2469b1b18281c
Task: T111298
