Create README.md
Merge branch 'release-v1.1.8.5' into develop
[#135]Missing Article Category in sitemap - Fixed
[#138]Bootstrap v1.1.8.5 counter outside box with large amount 
of products and shows the product more than one time

-- Improve the pagination to make it more elegant
[#137]Support search by sku in the products admin panel
[#141][Bootstrap]Text of return request button is not 
translated in the account history
[#136]Ability to tune what to write to admin log

-- Add the ability to enable or disable the admin log in the
configuration > my store

In v2.0, we will add a error log module to record the errors 
such as fatal Error, warning, Parsing Error and Notice error 
etc.

Store owner could set the Display Errors, Log Errors, Errors 
Level and Error Log Filename in the configuration. 

Moreover, he could check the errors log in the error 
log module.
[#160] SKU field should be hidden if there is no SKU
Merge pull request #161 from lewellyn/Issue160

[#160] SKU field should be hidden if there is no SKU
[#163]Spelling Mistake - variants_speicals_price
replaced 

define('INFORMATION_SHIPPING_RETURNS', 4);

with:

define('INFORMATION_CONDITIONS_OF_USE', 4);
[#166]Order, Invoice and Packing Slip PDFs created invalid

-- Now, even if the quatity is great than 99, the pdf will be
shown as expected.
[#158]Remove Google Checkout payment module
[#165][Mistyping] \admin\external\tinymec\ - directory 
name shall be tinymce
[#165][Mistyping] \admin\external\tinymec\ - 
directory name shall be tinymce

-- Rename the directory name
[#137]Support search by sku in the products admin panel

-- Update the search condition to fix the issue in the search 
by sku
[#159]Mistyping in /admin/templates/default/locale/
ext-lang-ru-RU-min.js
[#173]CORRECTION: includes/modules/content/
upcoming_products.php

-- Remove the css as there isn't any upcoming product
[#159]
[#171]Product Listing HTML Validation 
- Possible bug "Duplicate attribute class"

-- Add a helper function into the bootstrap template helpers
to output the products listing image. In this case, the code
modification will not impact the core code.