Update .gitignore for XS/MD

Small annoyance. :)
Merge pull request #52 from rojepp/patch-1

Update .gitignore for XS/MD
Fix two typos in Readme.md
Merge pull request #55 from kurtschelfthout/patch-1

Fix two typos in Readme.md
Fix bad html and use https.

Seems like most browsers tolerate the bad html. But using http for the js links caused Chrome to block those downloads for me (since the the gihub.io page was https, it doesn't allow http links to leak and blocks them). This resulted in a good looking site locally but weird looking site remotely.
Fix logo so it works locally and remotely.
Merge pull request #57 from kurtschelfthout/patch-3

Fix logo so it works locally and remotely.
Merge pull request #56 from kurtschelfthout/patch-2

Fix bad html and use https.
Removed temp generated fsharpi file

First, it seems that this is not necessary, probably because FAKE 3.0 uses the
F# compiler services instead of the fsharpi executable.

Second, because the FAKE command was not the last command in the script, any
failure from the build script would not cause the 'build.sh' shell script to
return an error message, and e.g. a build server would see the build outcome as
a success.
Merge pull request #60 from PeteProgrammer/master

Removed temp generated fsharpi file
namespaces from all assemblies are rendered into one reference/index.html file
https://github.com/tpetricek/FSharp.Formatting/issues/49
NuGet.exe updated up to v2.8.2
Added a source link target
VSProj.LoadRelease complains about an import statement with an invalid path, added a condition to prevent this.
If we're source indexing pdb then it might make sense to ship it as well
Added comments to target and updated the readme
SourceLink check sums will fail if the line endings aren't lf
Checks for the existence of the source link decencies instead of not mono.
Merge pull request #61 from TWith2Sugars/sourcelink

Added a source link target
added init.fsx to generate build.fsx from template
the build.template file is a tokenized version of build.fsx