FIx mis-named variable

I don't know anything about the conversion you are doing, but the formula comes out if divided by hundred.
Divided by zero certainly wasn't properly descriptive.
Spelling errors

Mostly just simple typos.
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Translate errantvFinnish to English

These are almost all in code blocks, none of the edits affect tests or exercises.
Format code comments- ran right off page!

In some cases, I was forced to truncate the original message somewhat, as the original format used
in-line commenting. I believe that I was sucessful in retaing the original meaning, but now the writing
doesn't continue right off the page.
Various grammer fixes

These range from punctuation to awkward phrasing to places where the actual meaning is pretty unclear.
I think that general comprehension is served by these edits, I took care to stay away from any style
judgements. In the cases where exercise-related code was cleaned up, care was taken to ensure that all
tests still pass 100% green.
Wrong parameter name in spec for exercise 101.4

Used 'searched' in 'searched' instead of the intended 'word' in 'searched'.
Add myself to English translation contributor list

You can choose to not merge this as your standards dictate, of course.
Merge pull request #19 from mateor/master

Clean up and changes (weeks 1-6)