Add dropbox_uploader package

packages/dropbox_uploader.rb

+require 'package'
+
+class Dropbox_uploader < Package
+  description 'Dropbox Uploader is a BASH script which can be used to upload, download, list or delete files from Dropbox, an online file sharing, synchronization and backup service.'
+  homepage 'https://github.com/andreafabrizi/Dropbox-Uploader'
+  version '1.0'
+  source_url 'https://github.com/andreafabrizi/Dropbox-Uploader/archive/1.0.tar.gz'
+  source_sha256 '8c9be8bd38fb3b0f0b4d1a863132ad38c8299ac62ecfbd1e818addf32b48d84c'
+
+  def self.install
+    system "sed -i 's,dropbox_uploader.sh,dropbox_uploader,g' dropShell.sh"
+    system "chmod +x dropShell.sh"
+    system "chmod +x dropbox_uploader.sh"
+    system "mkdir -p #{CREW_DEST_DIR}/usr/local/bin"
+    system "cp dropShell.sh #{CREW_DEST_DIR}/usr/local/bin/dropshell"
+    system "cp dropbox_uploader.sh #{CREW_DEST_DIR}/usr/local/bin/dropbox_uploader"
+    puts ""
+    puts "Type 'dropbox_uploader' and follow the instructions to finish the installation.".lightblue
+    puts "To execute The Interactive Dropbox SHELL, type 'dropshell'.".lightblue
+    puts ""
+  end
+end