Fix typo

The correct way is config.i18n.fallbacks, without capitalized 'i' in 'i18n'
Improved README File

Add Instructions to require javascript assets
Add OptionValue Translation
Fix mistake in migration
Option Value is now able to be translated

With this commit Option Value is now available to be translated
I think this gem is no longer "a proof of concept", it is a working gem
with one more feature available.
Update spree_multi_lingual.gemspec

Update depedencies
 Remove ancient default_locale preference and depend on Rails.applicat…  …ion.config.i18n.default_locale instead
Add migrate data for taxons
Add ability to clone products with the translations
Update spree version to 1.2.x
Add ability to translate product properties
Deleting migrate_data_for_taxons migration because it breaks the translation
Deleting language dropdown in option type index
added multilanguage support for the tax name
added multilanguage to alt images
fields that can be translated now show a flag
cleanup image alt_text deface
added translation to shipping methods
added multi language to properties
added flags to the most speaked languages