Add bash completion for MacOS using brew

bash/completion

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+COMPLETION_DIR=/usr/local/etc/bash_completion.d/
+
+if [ -d "$COMPLETION_DIR" ]; then
+    for i in $(ls "$COMPLETION_DIR"); do
+        file="$COMPLETION_DIR/$i"
+        if [ -r $file ]; then
+            source $file
+        fi
+        unset file
+    done
+    unset i
+fi
+
+[[ -f /usr/local/etc/bash_completion ]] && source /usr/local/etc/bash_completion
+
+unset COMPLETION_DIR

bashrc

@@ -16,12 +16,12 @@ source-file ~/.bash/path
 source-file ~/.bash/environment
 source-file ~/.bash/prompt
 source-file ~/.bash/ensure-ssh-agent
+source-file ~/.bash/completion
 source-file ~/opt/bash/env
 source-file ~/go/bin
 
 unset -f source-file
 
-[[ -f /usr/local/etc/bash_completion ]] && source /usr/local/etc/bash_completion
 [[ -f $HOME/.nvm/nvm.sh ]] && source $HOME/.nvm/nvm.sh
 [[ -r $NVM_DIR/bash_completion ]] && source $NVM_DIR/bash_completion