Double Shot #1243

ActiveImporter - Class-based importer for spreadsheets and CSV files to ActiveRecord.
Bootstrap without all the debt - Using Bootstrap styles with semantic HTML via SASS.
RocksDB - "A persistent key-value store for fast storage environments" from Facebook.
XCode Cheat Sheet - Just what it says.
Battle ready Nginx - an optimization guide - Improve your nginx configuration skills.
SASS for Web Designers - $9 ebook.