Update README.md

README.md

@@ -1,21 +1,17 @@
 # timemachines ([docs](https://microprediction.github.io/timemachines/)) ![simple](https://github.com/microprediction/timemachines/workflows/tests/badge.svg) ![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)
 
-
-Univariate prediction functions from diverse packages supported in a simple stateless pure function syntax. Here `yt` is a vector or scalar, and we want to predict `yt` (or its first coordinate if `yt` is a vector) three steps in advance. 
+Univariate prediction functions from diverse packages supported in a simple stateless pure function syntax, mosty for benchmarking and selection purposes. Here `yt` is a vector or scalar, and we want to predict `yt` (or its first coordinate if `yt` is a vector) three steps in advance. 
 
      from timemachines.skaters.somepackage.somevariety import something as f
      for yt in y:
          xt, xt_std, s = f(y=yt, s=s, k=3)
          
-This emits a k-vector xt of forecasts, and corresponding k-vector xt_std of estimated standard errors. See [skaters](https://microprediction.github.io/timemachines/skaters) for choices of somepackage, somevariety and something. You can also ensemble, compose, bootstrap and do other things with one line of code. 
-
-
-These are ([documented](https://microprediction.github.io/timemachines/) and [assessed](https://microprediction.github.io/timeseries-elo-ratings/html_leaderboards/overall.html)).  
+This emits a k-vector xt of forecasts, and corresponding k-vector xt_std of estimated standard errors. See [skaters](https://microprediction.github.io/timemachines/skaters) for choices of `somepackage`, `somevariety` and `something`. You can also ensemble, compose, bootstrap and do other things with one line of code. The `f` is called a `skater`. These are ([documented](https://microprediction.github.io/timemachines/) and [assessed](https://microprediction.github.io/timeseries-elo-ratings/html_leaderboards/overall.html)).  
 
-The following packages probably work well in this context. 
-- ![tsa](https://github.com/microprediction/timemachines/workflows/test-tsa/badge.svg)
-- ![darts](https://github.com/microprediction/timemachines/workflows/test-darts/badge.svg)
-- ![greykite](https://github.com/microprediction/timemachines/workflows/test-greykite/badge.svg)
+Test for the following packages are expected to be working.  
+- ![tsa](https://github.com/microprediction/timemachines/workflows/test-tsa/badge.svg)    Statsmodels 
+- ![darts](https://github.com/microprediction/timemachines/workflows/test-darts/badge.svg)  
+- ![greykite](https://github.com/microprediction/timemachines/workflows/test-greykite/badge.svg) 
 - ![sktime](https://github.com/microprediction/timemachines/workflows/test-sktime/badge.svg)
 - ![tbats](https://github.com/microprediction/timemachines/workflows/test-tbats/badge.svg)
 - ![simdkalman](https://github.com/microprediction/timemachines/workflows/test-simdkalman/badge.svg)