Update CustomMatchers.fs

If your OS is running a culture where the '.' character is a thousands separator rather than a decimal point, the 'equalWithin' function parses the strings incorrectly (10.11 becomes 1011). Adding explicit cultures fixes the problem.
Fix Fs Unit issue #10 with None values
fix / improve build files ( bat / fsx / nuget packages ) + remove binaries which is downloading via nuget
keep FAKE in packages directory (+ update nuget tool)
Merge pull request #26 from dmohl/master

Updated the xUnit NuGet package.
Merge pull request #17 from clone1985/patch-1

Update CustomMatchers.fs (Resubmitting pull request to the main repo)
Merge pull request #22 from alex-bogomaz/equalsNoneBug

Fix issue #10 with None values
Merge pull request #24 from Heather/master

fix / improve build files ( bat / fsx / nuget packages ) + clean up
Update README.md
Merge pull request #27 from vasily-kirichenko/master

Add code colorization to README.md
Fixing mono building under Fake
Update build.bat

pause bad for CI
Windows and Mac CI
Merge pull request #28 from jbtule/master

CI for Fake building on Windows and Mono
fix typo
Merge pull request #29 from enricosada/patch-1

fix typo
Few tweaks to support case sensitive filesystems

find -name "*.nuspec" -print | xargs sed -i 's/NET20/Net20/g'
find -name "*.nuspec" -print | xargs sed -i 's/NET40/Net40/g'
find -name "*.fsproj" -print | xargs sed -i 's/nuget.targets/NuGet.targets/g'
Merge pull request #30 from smoothdeveloper/master

Few tweaks to support case sensitive filesystems
allow to use contain on System.Collection members like ArrayList
Merge pull request #31 from mexx/system-collections

allow to use contain on System.Collection members like ArrayList