update bourne dependency to fix test-running issues with ruby 2.0.0

bourne is dependening on mocha that had issues with ruby 2.0.0 in its
older versions. this commit updates bourne to a newer version, which
resolves the test-running issues
test against ruby 2.0.0 on a CI server
remove mocha deprecation warnings
be more careful when reading sinatra environment name

closes #202
split javascript notifier into loader and configuration

Conflicts:
	lib/airbrake/rails/javascript_notifier.rb
	lib/templates/javascript_notifier
	lib/templates/javascript_notifier.erb
	lib/templates/javascript_notifier_configuration.erb
wrap the js configuration in try-catch
return environment_info unless environment_name

return environment_info if configuration.environment_name dose not exists. (plain ruby script)

```
def foo
  info = 'first'
  info << ' second' if false
end

foo
=> nil

def foo
  info = 'first'
  info << ' second' if false
  info
end

foo
=> 'first'
```
Merge pull request #217 from ZubKonst/patch-1

return environment_info unless environment_name
Escape user name in Airbrake notify command

If a user has manually overridden this variable to be a full name, it
may contain a space which will break the command. Escaping the name
solves this issue.

Added a unit test for a name needing escaping.
Merge pull request #144 from BlueKai/escape_capistrano_commands

Escape user name in Airbrake notify command
Use a separate (blank) array of ignored exceptions for Rake tasks
Merge pull request #223 from ndbroadbent/rake_ignored_exceptions

Use a separate (blank) array of ignored exceptions for Rake tasks
ignore Gemfile.lock

http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/
lock json-schema to 1.0.12

because 2.0.0 is pretty buggy
add a scenario for ignoring rake exceptions [#223]
get rid of activesupport once and for all
better explanation of ignored environments and classes
fully support Rails 4.0
Add support for SSL in the command line tool.
Merge pull request #224 from phusion/master

Add support for SSL in the command line tool