Updates README with installation and usage
Updates README with installation and usage

saikobee/expr-lang,saikobee/expr-lang,rdenmark/squiggle,wavebeem/squiggle,rdenmark/squiggle,saikobee/squiggle,saikobee/squiggle,squiggle-lang/squiggle-lang,saikobee/expr-lang,rdenmark/squiggle,squiggle-lang/squiggle-lang,saikobee/squiggle,squiggle-lang/squiggle-lang,wavebeem/squiggle,wavebeem/squiggle