Add README examples of stats/base/dists/weibull namespace

lib/node_modules/@stdlib/stats/base/dists/README.md

@@ -121,10 +121,41 @@ var distributions = dists;
 <!-- eslint no-undef: "error" -->
 
 ```javascript
-var objectKeys = require( '@stdlib/utils/keys' );
-var dists = require( '@stdlib/stats/base/dists' );
 
-console.log( objectKeys( dists ) );
+var Weibull = require( '@stdlib/stats/base/dists/weibull' );
+
+// Set k = 2.0 and lambda = 4.0
+var k = 2.0;
+var lambda = 4.0;
+
+// Caculate cumulative distribution function at x = 0.8
+var cdf = Weibull.cdf( 0.8, k, lambda );
+// returns ~0.039
+
+// Caculate moment-generating function at x = 0.6
+var mgf = Weibull.mgf( 0.6, k, lambda );
+// returns ~18.149
+
+// Caculate probability density function at x = 0.8
+var pdf = Weibull.pdf( 0.8, k, lambda );
+// returns ~0.096
+
+// Caculate expected value
+var mean = Weibull.mean( k, lambda );
+// returns ~3.545
+
+// Use the constructor function for creating a Weibull distribution object
+var weibull = Weibull.Weibull( k, lambda );
+// returns a Weibull distribution object with k = 2.0 and lambda = 4.0
+
+// Caculate quantile function of the Weibull distribution object at p = 0.5
+var quantile = weibull.quantile( 0.5 );
+// returns ~3.330
+
+// Get the median of Weibull distribution object
+var median = weibull.median;
+// returns ~3.330
+
 ```
 
 </section>