Replaced call to findByValue with a "not implemented" method to match…

… instructions in curriculum. (Issue #52)

src/main/java/TechJobs.java

@@ -62,7 +62,7 @@ public static void main (String[] args) {
                 String searchTerm = in.nextLine();
 
                 if (searchField.equals("all")) {
-                    printJobs(JobData.findByValue(searchTerm));
+                    System.out.println("Search all fields not implemented yet.");
                 } else {
                     printJobs(JobData.findByColumnAndValue(searchField, searchTerm));
                 }