Bump gem version to v1.0.0

• Update version dependencies to rely on ActiveSupport ~> 4.x.
• Provide installtion_type = rails settings attribute when intercom messenger is installed via gem.
• Updated readme docs to add company attributes example

Allows api_base to be specified in config

#329

Fix gem for Rails 6.0.0.rc2 media_type change

#313

Allow specifying domain when deleting cookie

#278 Allow specifying domain when deleting cookie

Special thanks to @BastienL @abrambailey

Added optional encryption feature

#263 Encrypted payload support
#264 Remove support for ruby 1.9

v0.3.3

• Add check for Date class
• Remove Gemfile.lock from Git
• Add ability to supply Proc/Symbol for custom_data
• Add hide_default_launcher
• Fix json escape with gsub

v0.3.2

Support for creating custom attributes for Leads

v0.3.1

Print depracation warning for api_keys config

Removal of broken and defunct import rake task

In line with the deprecations of API V1 we have now removed the broken import rake task that has not been working for a long time.