message: Update build instructions for Linux
diff: @@ -190,6 +190,10 @@ Make sure you've installed the following dependencies:
  - `libc++abi-dev`
  - `ninja-build`
  +In addition your distribution might require:
  +
  +- `libxi-dev`
  +
  Then invoke `cmake`:
  ```
  @@ -217,6 +221,13 @@ $ ninja
  This will build Filament, its tests and samples, and various host tools.
  +If you experience link errors you must ensure that you are using `libc++abi` by passing this
  +extra parameter to `cmake`:
  +
  +```
  +-DFILAMENT_REQUIRES_CXXABI=true
  +```
  +
  #### macOS
  To compile Filament you must have the most recent version of Xcode installed and you need to
  