Update README.md

Mention that WavTap is broken on El Capitan.

README.md

@@ -8,16 +8,22 @@ Capture whatever your mac is playing to a .wav file on your Desktop—as simply
 
 #### Installation
 
-Run the [installer](https://github.com/pje/WavTap/releases/download/0.3.0/WavTap.0.3.0.pkg).
+##### El Capitan 
 
-**NB**: As of 10.10, OSX now bans drivers that haven't received explicit approval from Apple. The only workaround I'm aware of is to set a system flag to [globally allow **all** unsigned kernel extensions](http://apple.stackexchange.com/questions/163059/how-can-i-disable-kext-signing-in-mac-os-x-10-10-yosemite). This means WavTap *will not work* unless you've enabled `kext-dev-mode`, using something like this:
+**NB: WavTap is completely broken on El Capitan** due to Apple's [System Integrity Protection] (https://en.wikipedia.org/wiki/System_Integrity_Protection). The next release of WavTap will fix this.
+
+##### Yosemite
+
+As of Yosemite, Apple bans drivers that haven't received explicit approval from Apple. The only workaround I'm aware of is to set a system flag to [globally allow **all** unsigned kernel extensions](http://apple.stackexchange.com/questions/163059/how-can-i-disable-kext-signing-in-mac-os-x-10-10-yosemite). This means WavTap *will not work* unless you've enabled `kext-dev-mode`, using something like this:
 
 ```shell
 sudo nvram boot-args=kext-dev-mode=1
 ```
 
 Yes, [this sucks](https://www.gnu.org/philosophy/can-you-trust.html).
 
+Once that's done, run the [installer](https://github.com/pje/WavTap/releases/download/0.3.0/WavTap.0.3.0.pkg).
+
 #### Uninstallation
 
 `make uninstall` removes everything