Allow loose match on account set.

Previously, trying to set an account without exactly matching the account
name (case-sensitive) resulted in an unsightly NoMethodError:

gems/t-0.9.9/lib/t/set.rb:21:in keys' for nil:NilClass (NoMethodError)

With this change, we can be a little smarter about handling the user's input.
 -- Usernames are now stored downcased, since Twitter doesn't care
 -- Activating  an account will attempt an exact match first
 -- If exact match fails, a case-insensitve loose match will be attempted
 -- If the loose match fails, a sensible error message will be displayed.

To get this to work, I had to dig a little deeper into the .trc file to get the
downcased, complete version of the username (@rcfile[screen_name][consumer_key][username]),
when setting @rcfile.active_profile. Hopefully this is the correct way to do so.

A few additional specs to cover this added funcitonality are included.
Resolving merge conflicts.

This keeps me up to date with the upsteam repo.
Add support for partial matches when setting username.

Account can now be set with a case-insensitive comparison on username.

If an account is not found for the username as entered, an unambiguous match
will be selected, if one exists. Otherwise, the ambiguous matches will be
suggested in an error message.

This also adds a friendlier error if the username doesn't match any accounts.
Correct fixtures so all specs pass.

Since just the account setting tests need the extra account fixture,
this change can be applied more locally. Other tests now run on the
expected data set.
Merge pull request #51 from brookr/master

Allow loose match when setting account
Add indentaion option to ruler
Rename fixture
Add support for images

Closes #57.
Bump version to 1.1.0
Fix typo `trends_locations` -> `trend_locations`

Closes #66.
Bump version to 1.1.1
Add "sort" option to trend_locations method
Rename status to Tweet
Update specs for Twitter API v1.1
tests for Stream#all
fix build failure in Ruby 1.8
tests from Stream#matrix and Stream#all
added tests for timeline, users, and search stream methods
dry up streaming tests
fix the build, print_csv_status is now print_csv_tweet