added Composer completition and aliases

plugins/composer/composer.plugin.zsh

+# ------------------------------------------------------------------------------
+#          FILE:  composer.plugin.zsh
+#   DESCRIPTION:  oh-my-zsh composer plugin file.
+#        AUTHOR:  Daniel Gomes (me@danielcsgomes.com)
+#       VERSION:  1.0.0
+# ------------------------------------------------------------------------------
+
+# Composer basic command completion
+_composer_get_command_list () {
+	composer --no-ansi | sed "1,/Available commands/d" | awk '/^  [a-z]+/ { print $1 }'
+}
+
+_composer () {
+  if [ -f composer.json ]; then
+    compadd `_composer_get_command_list`
+  fi
+}
+
+compdef _composer composer
+
+# Aliases
+alias c='composer'
+alias csu='composer self-update'
+alias cu='composer update'
+alias ci='composer install'
+alias ccp='composer create-project'
+
+alias cget='curl -s https://getcomposer.org/installer | php'
\ No newline at end of file