The instructions on how to automatically mount NTFS drives/volumes as Read/Write (originally found on Stack Exchange: http://apple.stackexchange.com/a/180248) worked great. However after installing software updates to 10.10.4 (at present) this stopped working and reverted to mounting as read-only. Most likely that the /sbin/mount_ntfs binary was replaced and the link to the osxfuse/ntfs-3g version removed. Relinking got it working again.
Instructions in brief for future reference:
When you try to install osxfuse through brew, this is the resultant message:
osxfuse: Building this formula from source isn't possible due to OS X Yosemite and above's strict unsigned kext ban. You can install with Homebrew Cask: brew install Caskroom/cask/osxfuse
Install Homebrew Cask (if needed):
brew install caskroom/cask/brew-cask
Install a binary osxfuse package from Homebrew Cask:
brew cask install osxfuse
Install ntfs-3g:
brew install homebrew/fuse/ntfs-3g
You need to create a symlink for mount_ntfs, in order to make drives mount automatically:
This is what needed to be redone after the OS X software update to 10.10.4
sudo mv /sbin/mount_ntfs /sbin/mount_ntfs.original sudo ln -s /usr/local/sbin/mount_ntfs /sbin/mount_ntfs