README.md in mspire-0.10.7.1 vs README.md in mspire-0.10.7.2

@@ -54,15 +54,26 @@
 #### reading
 
 ```ruby
 require 'mspire/mzml'
 
+# get the intensity of the highest peak from each spectrum
+intensities = Mspire::Mzml.foreach(mzml_file).map do |spectrum|
+  spectrum.intensities.max
+end
+
+# open the file for other operations
 Mspire::Mzml.open(mzml_file) do |mzml|
+  # read each spectra
+  mzml.each do |spectrum|
+    # do something with each spectrum ...
+  end
 
-  # random access by index or id (even if file wasn't indexed)
+  # or random access by index or id (even if file wasn't indexed)
   spectrum = mzml[0]
   spectrum = mzml["controllerType=0 controllerNumber=1 scan=2"]
 
+  # some things to do with a spectrum
   spectrum.mzs
   spectrum.intensities
 
   # first 5 peaks
   spectrum.peaks[0,5].each do |mz, intensity|