Fix up grammar, spelling and reformat

@gorhgorh what do you think?
Paging @dominictarr as a native speaker
You have edit rights,  and your english is good,  go for it
Le 17 sept. 2014 18:37, "Julian Oates" <notifications@github.com> a écrit :

> In README.md:
>
> >
> >  ## Disclaimer
> >
> > -all talks are welcome, but we are not really here to promote "how we X helped the company Y to become the biggest in Z", we are here to have some good conversation about exiting technologies, with an emphasis on the one that free our minds.
> > +All talks are welcome, but we are not really here to promote "how we X helped
>
> if we are sending the message "this is NOT what we want" then we should do
> that "not really here to" is weak language, please change to "we are *not*
> here to" (with emphasis on not)
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/squatconf/talks/pull/2/files#r17675822>.
>