Update core-functions-in-depth.md
Fix typo
fixed error in concurrency example
Update getting-started.md

Line 151: "Change line 9 so that it says this:" should read "Change line 7 so that it says this:"
Three minor typos

Correcting three minor typos.
Update getting-started.md

fixed typo
Update basic-emacs.md

fixed type
fix extra `see` in sentence
update installation information for Linux and Windows
Fix typo in core-functions-in-depth output of unify-diet-data example

Minor typo in the output generated form the unify-diet-data example in
the core-function-in-depth chapter.
Merge pull request #45 from JarrodCTaylor/master

Fix typo in core-functions-in-depth output of unify-diet-data example
Merge pull request #43 from mkcp/patch-1

fix extra `see` in sentence
Merge pull request #44 from PhDP/master

update installation information for Linux and Windows
Merge pull request #40 from benjaminmitchell/patch-1

Three minor typos
Merge pull request #35 from drguildo/patch-1

Update core-functions-in-depth.md
Merge pull request #37 from jastix/master

Fix typo
Merge pull request #39 from toperkin/patch-1

Update getting-started.md
Merge pull request #41 from matthiasn/patch-1

Update getting-started.md
Merge pull request #42 from matthiasn/patch-2

Update basic-emacs.md
Merge pull request #38 from stianeikeland/concurrency-fix

fixed error in reducers example