fixing typo

2.01_BoyerMoore.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "The following gray box contains sevearl functions that preprocess the pattern *P* and create the tables needed to apply the bad character and good suffix rules.  We won't discuss these, but if you are interested, see Chapter 2 of:\n",
+    "The following gray box contains several functions that preprocess the pattern *P* and create the tables needed to apply the bad character and good suffix rules.  We won't discuss these, but if you are interested, see Chapter 2 of:\n",
     "\n",
     "Gusfield, Dan. Algorithms on strings, trees and sequences: computer science and computational biology. Cambridge university press, 1997."
    ]
@@ -339,21 +339,21 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 2",
    "language": "python",
-   "name": "python3"
+   "name": "python2"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 3
+    "version": 2
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.4.3"
+   "pygments_lexer": "ipython2",
+   "version": "2.7.10"
   }
  },
  "nbformat": 4,