This is how I manage my textmate bundles.

bundles.sh

#
# This script will install the following Textmate bundles
#
# Languages
#   - c                         https://github.com/textmate/c.tmbundle
#   - coffeescript              https://github.com/jashkenas/coffee-script-tmbundle
#   - context free              https://github.com/textmate/context-free.tmbundle
#   - erlang                    https://github.com/textmate/erlang.tmbundle
#   - haskell                   https://github.com/textmate/haskell.tmbundle.git
#   - html                      https://github.com/textmate/html.tmbundle
#   - java                      https://github.com/textmate/java.tmbundle
#   - javascript                https://github.com/subtleGradient/javascript.tmbundle
#   - json                      https://github.com/textmate/json.tmbundle
#   - latex                     https://github.com/textmate/latex.tmbundle
#   - lisp                      https://github.com/textmate/lisp.tmbundle.git
#   - markdown                  https://github.com/textmate/markdown.tmbundle
#   - objective-c               https://github.com/textmate/objective-c.tmbundle
#   - python                    https://github.com/textmate/python.tmbundle
#   - ruby                      https://github.com/textmate/ruby.tmbundle
#   - scala                     https://github.com/mads379/scala.tmbundle
#   - scss                      https://github.com/kuroir/SCSS.tmbundle
#   - shell                     https://github.com/textmate/shellscript.tmbundle
#   - standard-ml               https://github.com/textmate/standard-ml.tmbundle
#   - textile                   https://github.com/textmate/textile.tmbundle
#   - xml                       https://github.com/textmate/xml.tmbundle
#   - yaml                      https://github.com/textmate/yaml.tmbundle
#
# Utilities
#   - navigation                https://github.com/textmate/navigation.tmbundle
#   - git                       https://github.com/jcf/git-tmbundle
#   - tidy                      https://github.com/mads379/tidy.tmbundle
#   - js-tools                  https://github.com/adamhope/js-tools.tmbundle
#   - ensime                    https://github.com/mads379/ensime.tmbundle
#   - diff                      https://github.com/textmate/diff.tmbundle
#
# Plugins I use but this script won't install
#   - missing drawer            https://github.com/jezdez/textmate-missingdrawer

mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles

echo "----------------------"
echo "Installing languages."
echo "----------------------"

rm -rf c.tmbundle
rm -rf coffe-script.tmbundle
rm -rf context-free.tmbundle
rm -rf erlang.tmbundle
rm -rf haskell.tmbundle
rm -rf html.tmbundle
rm -rf java.tmbundle
rm -rf javascript.tmbundle
rm -rf json.tmbundle
rm -rf latex.tmbundle
rm -rf lisp.tmbundle
rm -rf markdown.tmbundle
rm -rf objective-c.tmbundle
rm -rf python.tmbundle
rm -rf ruby.tmbundle
rm -rf scala.tmbundle
rm -rf scss.tmbundle
rm -rf shellscript.tmbundle
rm -rf standard-ml.tmbundle
rm -rf textile.tmbundle
rm -rf xml.tmbundle
rm -rf yaml.tmbundle

git clone https://github.com/textmate/erlang.tmbundle.git
git clone https://github.com/textmate/lisp.tmbundle.git
git clone https://github.com/textmate/haskell.tmbundle.git
git clone https://github.com/subtleGradient/javascript.tmbundle.git
git clone https://github.com/mads379/scala.tmbundle.git
git clone https://github.com/jashkenas/coffee-script-tmbundle.git coffe-script.tmbundle
git clone https://github.com/textmate/context-free.tmbundle.git
git clone https://github.com/kuroir/SCSS.tmbundle.git scss.tmbundle
git clone https://github.com/textmate/objective-c.tmbundle.git
git clone https://github.com/textmate/ruby.tmbundle.git
git clone https://github.com/textmate/java.tmbundle.git
git clone https://github.com/textmate/markdown.tmbundle.git
git clone https://github.com/textmate/python.tmbundle.git
git clone https://github.com/textmate/latex.tmbundle.git
git clone https://github.com/textmate/c.tmbundle.git
git clone https://github.com/textmate/xml.tmbundle.git
git clone https://github.com/textmate/json.tmbundle.git
git clone https://github.com/textmate/shellscript.tmbundle.git
git clone https://github.com/textmate/textile.tmbundle.git
git clone https://github.com/textmate/standard-ml.tmbundle.git
git clone https://github.com/textmate/yaml.tmbundle.git
git clone https://github.com/textmate/html.tmbundle.git

echo "----------------------"
echo "Installing utilities."
echo "----------------------"

rm -rf diff.tmbundle
rm -rf ensime.tmbundle
rm -rf git.tmbundle
rm -rf js-tools.tmbundle
rm -rf navigation.tmbundle
rm -rf tidy.tmbundle

git clone https://github.com/jcf/git-tmbundle.git git.tmbundle
git clone https://github.com/adamhope/js-tools.tmbundle.git
git clone https://github.com/mads379/ensime.tmbundle.git
git clone https://github.com/mads379/tidy.tmbundle.git
git clone https://github.com/textmate/navigation.tmbundle.git
git clone https://github.com/textmate/diff.tmbundle.git