Add travis script to run all benchmarks
Add travis script to run all benchmarks

Mark-Simulacrum/rustc-perf-collector,nrc/rustc-perf,Mark-Simulacrum/rustc-perf-collector,Mark-Simulacrum/rustc-perf-collector,Mark-Simulacrum/rustc-perf-collector,nrc/rustc-perf,nrc/rustc-perf,Mark-Simulacrum/rustc-perf-collector,Mark-Simulacrum/rustc-perf-collector