Merge pull request #79 from Mellbourn/zsh-completion

* Unified the naming between bash and zsh
* Cleaned up indentations, line endings
* Tweaked documentation

completion/yadm.zsh_completion

@@ -0,0 +1,46 @@
+#compdef yadm
+_yadm(){
+    local -a _1st_arguments
+     _1st_arguments=(
+        'help:Display yadm command help'
+        'init:Initialize an empty repository'
+        'config:Configure a setting'
+        'list:List tracked files'
+        'alt:Create links for alternates'
+        'bootstrap:Execute $HOME/.yadm/bootstrap'
+        'encrypt:Encrypt files'
+        'decrypt:Decrypt files'
+        'perms:Fix perms for private files'
+        'add:git add'
+        'push:git push'
+        'pull:git pull'
+        'diff:git diff'
+        'checkout:git checkout'
+        'co:git co'
+        'commit:git commit'
+        'ci:git ci'
+        'status:git status'
+        'st:git st'
+        'reset:git reset'
+        'log:git log'
+    )
+
+    local context state line expl
+    local -A opt_args
+
+    _arguments '*:: :->subcmds' && return 0
+
+    if (( CURRENT == 1 )); then
+        _describe -t commands "yadm commands" _1st_arguments -V1
+        return
+    fi
+
+    case "$words[1]" in
+        *)
+            _arguments ':filenames:_files'
+        ;;
+    esac
+
+}
+
+_yadm "$@"