make showSortIcons optional

Author: spencergray96

package.json

@@ -1,6 +1,6 @@
 {
   "name": "frame-one-table",
-  "version": "0.2.6",
+  "version": "0.2.7",
   "description": "A react table with maximum flexibility.",
   "main": "build/index.js",
   "module": "build/index.es.js",

src/TableGenerator.tsx

@@ -139,11 +139,11 @@ export interface ColumnOption<T = any> {
 	/**
 	 * Toggle to hide or show the arrow icons in the header cell if the column is sortable. Takes precedent of the "showSortIcons" props from TableGeneratorProps
 	 */
-	showSortIcons: boolean;
+	showSortIcons?: boolean;
 
 	/**
 	 * Custom sort function for the column where a & b are the values.
-	 * If not custom sort is applied, the library will attempt to sort automatically based on the primitive data type
+	 * If no custom sort is applied, the library will attempt to sort automatically based on the primitive data type
 	 *
 	 * @param a
 	 * @param b