Merge pull request #51 from ShadowMech/master

v0.2 latest fixes
Merge branch 'master' of https://github.com/longaccess/windows-client
VS2013 Compatible Version

- VS2013 Import.
- Removed unused projects
- Fixed References
Readme Updates

Updated Readme to reflect the build system updates.
.NET 4 Requirement

Updated target framework from .NET 3.5 to .NET 4.0
ForcedUpdate new date check

Moved the forced update date to DateTime(2014, 2, 28) from
DateTime(2014, 1, 30)
NSIS script

Added nsis script to build installer. Also included .zip file with all
the files needed for a successful build (latest version), without the
need to build the whole guiclient project.
Update README.md
Removed old installer project.
Removed non-working .net checker.
update .gitignore
get release files from subdirectory in NSIS scripts
Use DotNetChecker. Fixes: #53

Use DotNetChecker to check the local .NET version installed and prompt
the user to download the required if the installed version is older.

Updated README files.
README -> README.md
Update README.md
Check 64-bit Windows OS

Installer checks for 64-bit Windows OS and aborts if 32-bit Windows OS
is found.
Merge pull request #54
output release files to nsis\Release
execute nuget restore before build
Merge pull request #55 from kouk/master

some automation