updated README

README.md

@@ -6,12 +6,27 @@ Multinomial Random Effects
 
 This code solves multinomial mixed effects models. 
 
-A minimal example is:
+## Installing
 
-fit a binomial model
+```
+devtools::install_github('bdilday/mnre')
+```
+
+## Binomial Example
+
+fit a binomial model using a formula interface
+
+```
+library(mnre)
+ev = mnre_simulate_multinomial_data_factors(nfct=2, K_class = 2, nlev=50, nobs=20000)
+mnre_mod = mnre_fit(y ~ 1 + (1|fct01) + (1|fct02), data=ev$fr, verbose=0)
+mnre_mod$theta
+[1] 0.9926043 0.9537682
+```
+
+fit a binomial model using lower-level `nd_min_fun`
 
 ``` 
-devtools::install_github('bdilday/mnre')
 library(mnre)
 ev = mnre_simulate_multinomial_data_factors(nfct=2, K_class = 2, nlev=50, nobs=20000)
 nf = mnre::nd_min_fun(ev)
@@ -28,6 +43,8 @@ glmer_mod@theta
 [1] 0.9925264 0.9537615
 ```
 
+## Multinomial model
+
 Fit a multinomial model
 
 ```