Fix whitespace errors in 3 files

So I learnt that trailing whitespace did not exactly follow Git
commit standards, so away with those! Now fixed and now awesome.

In the future, I would like that we keep following Git commit standards:

- Commit msg lines hard-wrapped to 72 chars (line above is EXACT 72)
- Commit message title is short and in imperative sense
- Commit contains no trailing or extra whitespaced files
- Each commit does exactly ONE thing.
- Commit msgs are written descriptively.
- Commit msgs are split into paragraphs, like this message

Note that Markdown files require trailing spaces at places. Line 4 of
README.md has 2 extra spaces at the end to designate newline (br tag).
So it may be necessary to ignore whitespace rules for ONLY those files.

Signed-off-by: Siddarth Iyer <mindstormer619@gmail.com>