To identity Twitter solely as a micro-blogging service could be to do it a disservice. The company wants to be much more to developers building mobile apps, and at its Flight conference on Wednesday it welcomed them in.Twitter unveiled Fabric on Wednesday, a broad software development kit aimed at helping developers build, grow and monetize their mobile apps. It includes tools for crash reporting, app log-ins, embedding and sharing Twitter posts, and measuring ad effectiveness.The free SDK, more than a year in the making, could usher in a wave of rich apps with more tie-ins to Twitter. Its major components include Crashlytics, Twitter’s crash-reporting system; a tool called Digits that lets users log in with a phone number instead of a password; and easier ways to embed Twitter content in apps and post to Twitter across iOS and Android.To read this article in full or to leave a comment, please click here