Merge pull request #68 from nth10sd/gflagsAdminNote

Gflags admin note

README.md

@@ -21,13 +21,14 @@ After the addition of FuzzManager support, you will need to first install the pi
 
 Here's a guide to [pip and virtualenv](https://www.dabapps.com/blog/introduction-to-pip-and-virtualenv-python/).
 
-### Windows
+### Windows (only 64-bit supported)
 
 1. Install [MozillaBuild](https://wiki.mozilla.org/MozillaBuild) (Using compileShell for SpiderMonkey requires at least version 2.2.0) to get an msys shell.
 2. Install [Git for Windows](https://msysgit.github.io/) to get Git for Windows in order to clone these funfuzz repositories. (32-bit works best for now)
 3. Install [Debugging Tools for Windows](https://msdn.microsoft.com/en-us/windows/hardware/hh852365.aspx) to get cdb.exe and thus stacks from crashes.
 4. Make sure you install at least Microsoft Visual Studio 2015 (Community Edition is recommended) as per the build instructions above in the Setup section.
 5. Run `start-shell-msvc2015.bat` to get a MSYS shell. Do not use the MSYS shell that comes with Git for Windows. You can use Git by calling its absolute path, e.g. `/c/Program\ Files\ \(x86\)/Git/bin/git.exe`.
+    1. Run the batch file with administrator privileges to get gflags analysis working correctly.
 
 
 ### Mac