Update brew install command to match instructions on brew.sh

_docs/050_bootstrap.md

@@ -63,7 +63,7 @@ if [ "$system_type" = "Darwin" ]; then
   # install homebrew if it's missing
   if ! command -v brew >/dev/null 2>&1; then
     echo "Installing homebrew"
-    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"
+    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
   fi
 
   if [ -f "$HOME/.Brewfile" ]; then

_docs/110_faq.md

@@ -99,32 +99,34 @@ clone your repository. Read [bootstrap](bootstrap) for more details.
 
 ## Encryption
 
-### Can I use yadm without gpg?
+### Can I use yadm without gpg, openssl, transcrypt or git-crypt?
 
-Of course. You only need `gpg` installed if you plan on using the
+Of course. You only need `gpg`, `openssl`, `transcrypt` or `git-crypt` installed
-encrypt/decrypt features. yadm will tell you if it is missing a dependency
+if you plan on using the encrypt/decrypt features. yadm will tell you if it is
-for any command.
+missing a dependency for any command.
 
-### Should I `yadm add` my `.config/yadm/encrypt` file?
+### Should I `yadm add` my `~/.config/yadm/encrypt` file?
 
 Yes! This way your configuration for what files should be encrypted will follow
 you when you clone your repository.
 
 ### Should I `yadm add` encrypted files to repository?
 
-No, you should not. Files you want encrypted should be added to the file
+No, you should not. Instead, add the names (or wildcard patterns) of the files
-`.config/yadm/files.gpg` using the `yadm encrypt` command. Then
+you want encrypted to `~/.config/yadm/encrypt`. Then, use the `yadm encrypt`
-`.config/yadm/files.gpg` should be added to the yadm repository. This way, only
+command to encrypt the matched files which then adds them to
-an encrypted collection of those files are put into the repository. After
+`~/.local/share/yadm/archive`. Then, use `yadm add ~/.local/share/yadm/archive`
-cloning or updating your repository, you can use `yadm decrypt` to extract those
+to add this file to the yadm repository.  This way, only encrypted versions of
-files from `.config/yadm/files.gpg`. See the
+those files will be in the repository. After cloning or updating your
-[encryption help](encryption) for more details.
+repository, you can use `yadm decrypt` to extract the encrypted files from
+`~/.local/share/yadm/archive` into your working copy. See the [encryption
+help](encryption) for more details.
 
 ### I modified an encrypted file, but yadm doesn't show any modifications. Why?
 
-If you changed files which are matched by `.config/yadm/encrypt`, you must
+If you changed files which are matched by `~/.config/yadm/encrypt`, you must
-re-run `yadm encrypt` to generate a new version of `.config/yadm/files.gpg`.
+re-run `yadm encrypt` to generate a new version of `~/.local/share/yadm/archive`.
-Then `.config/yadm/files.gpg` can be added to a new commit.
+Then `~/.local/share/yadm/archive` can be added to a new commit.
 
 ### Why do I get the error `Inappropriate ioctl for device` when encrypting.