add disclaimer about 3rd party packages

Demoted the 3rd party maintained package installs to after compiling
from repository source and removed the broken Homebrew package
instructions.

README.md

@@ -112,49 +112,6 @@ X's indicate that these details have not been determined as of commit date.
 
 Approximately three months prior to a scheduled software upgrade, a branch from Master will be created with the new release version tag. Pull requests that address bugs should then be made to both Master and the new release branch. Pull requests that require extensive review and testing (generally, optimizations and new features) should *not* be made to the release branch. 
 
-## Installing Monero from a package
-
-Packages are available for
-
-* Ubuntu and [snap supported](https://snapcraft.io/docs/core/install) systems, via a community contributed build.
-
-    snap install monero --beta
-
-Installing a snap is very quick. Snaps are secure. They are isolated with all of their dependencies. Snaps also auto update when a new version is released.
-
-* Arch Linux (via [AUR](https://aur.archlinux.org/)):
-  - Stable release: [`monero`](https://aur.archlinux.org/packages/monero)
-  - Bleeding edge: [`monero-git`](https://aur.archlinux.org/packages/monero-git)
-
-* Void Linux:
-
-    xbps-install -S monero
-
-* GuixSD
-
-        guix package -i monero
-
-* OS X via [Homebrew](http://brew.sh)
-
-        brew tap sammy007/cryptonight
-        brew install monero --build-from-source
-
-* Docker
-
-        # Build using all available cores
-        docker build -t monero .
-
-        # or build using a specific number of cores (reduce RAM requirement)
-        docker build --build-arg NPROC=1 -t monero .
-     
-        # either run in foreground
-        docker run -it -v /monero/chain:/root/.bitmonero -v /monero/wallet:/wallet -p 18080:18080 monero
-
-        # or in background
-        docker run -it -d -v /monero/chain:/root/.bitmonero -v /monero/wallet:/wallet -p 18080:18080 monero
-
-Packaging for your favorite distribution would be a welcome contribution!
-
 ## Compiling Monero from source
 
 ### Dependencies
@@ -503,6 +460,46 @@ By default, in either dynamically or statically linked builds, binaries target t
 * ```make release-static-win64``` builds binaries on 64-bit Windows portable across 64-bit Windows systems
 * ```make release-static-win32``` builds binaries on 64-bit or 32-bit Windows portable across 32-bit Windows systems
 
+## Installing Monero from a package
+
+**DISCLAIMER: These packages are not part of this repository or maintained by this project's contributors, and as such, do not go through the same review process to ensure their trustworthiness and security.**
+
+Packages are available for
+
+* Ubuntu and [snap supported](https://snapcraft.io/docs/core/install) systems, via a community contributed build.
+
+    snap install monero --beta
+
+Installing a snap is very quick. Snaps are secure. They are isolated with all of their dependencies. Snaps also auto update when a new version is released.
+
+* Arch Linux (via [AUR](https://aur.archlinux.org/)):
+  - Stable release: [`monero`](https://aur.archlinux.org/packages/monero)
+  - Bleeding edge: [`monero-git`](https://aur.archlinux.org/packages/monero-git)
+
+* Void Linux:
+
+        xbps-install -S monero
+
+* GuixSD
+
+        guix package -i monero
+
+* Docker
+
+        # Build using all available cores
+        docker build -t monero .
+
+        # or build using a specific number of cores (reduce RAM requirement)
+        docker build --build-arg NPROC=1 -t monero .
+
+        # either run in foreground
+        docker run -it -v /monero/chain:/root/.bitmonero -v /monero/wallet:/wallet -p 18080:18080 monero
+
+        # or in background
+        docker run -it -d -v /monero/chain:/root/.bitmonero -v /monero/wallet:/wallet -p 18080:18080 monero
+
+Packaging for your favorite distribution would be a welcome contribution!
+
 ## Running monerod
 
 The build places the binary in `bin/` sub-directory within the build directory