Draft intro to crypto upgrade post.
Merge branch 'master' into crypto-upgrade
Move draft into drafts folder.
Draft other sections of bcrypt post.
Complete first actual draft.
Proof read and edit.
Fix formatting.
Add image and use reference-style links.
Set slug and move into _posts.
Fix some minor things.

-   Add a link to bcrypt-ruby.
-   Switch order of operands.
-   Change "way to do" to "way to go".
Use "user" instead of "account".
Add inline comment for notifying users.
Beef up intro with real-world examples.
Add rationale for removing old data.
Use "user_id" instead of "account_id".
Add a short conclusion.
Replace "information" with "passwords".

It's more accurate.
Replace "you Gemfile" with "your Gemfile".
Fix reference.
Fix references for LivingSocial and Sony links.