Add word count example for ch05s02 (#14)

* add story-count example

* merge scripts

story-count/frankenstein.txt

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+You will rejoice to hear that no disaster has accompanied the
+commencement of an enterprise which you have regarded with such evil
+forebodings.  I arrived here yesterday, and my first task is to assure
+my dear sister of my welfare and increasing confidence in the success
+of my undertaking.
+
+I am already far north of London, and as I walk in the streets of
+Petersburgh, I feel a cold northern breeze play upon my cheeks, which
+braces my nerves and fills me with delight.  Do you understand this
+feeling?  This breeze, which has travelled from the regions towards
+which I am advancing, gives me a foretaste of those icy climes.
+Inspirited by this wind of promise, my daydreams become more fervent
+and vivid.  I try in vain to be persuaded that the pole is the seat of
+frost and desolation; it ever presents itself to my imagination as the
+region of beauty and delight.  There, Margaret, the sun is for ever
+visible, its broad disk just skirting the horizon and diffusing a
+perpetual splendour.  There—for with your leave, my sister, I will put
+some trust in preceding navigators—there snow and frost are banished;
+and, sailing over a calm sea, we may be wafted to a land surpassing in
+wonders and in beauty every region hitherto discovered on the habitable
+globe.  Its productions and features may be without example, as the
+phenomena of the heavenly bodies undoubtedly are in those undiscovered
+solitudes.  What may not be expected in a country of eternal light?  I
+may there discover the wondrous power which attracts the needle and may
+regulate a thousand celestial observations that require only this
+voyage to render their seeming eccentricities consistent for ever.  I
+shall satiate my ardent curiosity with the sight of a part of the world
+never before visited, and may tread a land never before imprinted by
+the foot of man. These are my enticements, and they are sufficient to
+conquer all fear of danger or death and to induce me to commence this
+laborious voyage with the joy a child feels when he embarks in a little
+boat, with his holiday mates, on an expedition of discovery up his
+native river. But supposing all these conjectures to be false, you
+cannot contest the inestimable benefit which I shall confer on all
+mankind, to the last generation, by discovering a passage near the pole
+to those countries, to reach which at present so many months are
+requisite; or by ascertaining the secret of the magnet, which, if at
+all possible, can only be effected by an undertaking such as mine.

story-count/test-wc.sh

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+#!/bin/bash
+EXPECTED=$2
+ACTUAL=$(wc -w $1 | xargs | cut -f1 -d' ')
+
+if [[ $EXPECTED == $ACTUAL ]]
+then
+  echo "SUCCESS: correct word count"
+else
+  echo "FAIL: got $ACTUAL but expected $EXPECTED"
+  exit 1
+fi