[bin] Refine the letterup shortcut and add tmuxinator env

dot_tmuxinator/letter.yml

@@ -0,0 +1,11 @@
+# Graphical word processors can go eat an egg
+
+name: letter-<%= File.basename(Dir.pwd) %>
+root: <%= Dir.pwd %>
+
+pre: make pdf
+
+windows:
+  - editor: em -nw brief.tex
+  - build: make watch
+  - preview: zathura brief.pdf

dot_zshrc.tmpl

@@ -69,7 +69,15 @@ alias -g baml="|bat -l yaml"
 kp() { export KUBECONFIG=/dev/shm/kubeconfig && gopass $(gopass ls -f | fzf --query "'${1} kubeconfig" --select-1) > $KUBECONFIG && source <(kubectl completion zsh) }
 
 timestamp() { date +%Y-%m-%d-%H%M%S }
-letterup() { take $1 && cp -a ~/Documents/Personal/Brief-Vorlage/2017-LaTeX/* .; }
+letterup() {
+	if [[ ! -a $1 ]]; then
+	    take $1;
+	    cp -a ~/Documents/Personal/Brief-Vorlage/2017-LaTeX/* .;
+	else
+	    cd $1;
+	fi;
+	  tmuxinator start letter;
+}
 
 # Pretty up FZF
 export FZF_DEFAULT_OPTS='