Add description of getting started activity, and some minor fixes

README.md

@@ -1113,8 +1113,9 @@ JSON Output:
   ``` -->
 ## Getting Started
 
-create two files, one for input.json one for
-policy.json.
+This is a short getting started guide for Tirith. We will take a look on how we can use Tirith to guardrail a JSON input.
+
+Create two files, one for input.json one for policy.json.
 
 **input.json**
 
@@ -1189,17 +1190,17 @@ tirith -input-path input.json -policy-path policy.json
 
 Explanation:
 
--   **tirith**:
+-   `tirith`:
     -   This is the command to run the Tirith program, which is part of
          the StackGuardian Policy Framework.
 
--   **-input-path input.json**:
-    -   The -input-path option specifies the path to the input file.
+-   `-input-path input.json`:
+    -   The `-input-path` option specifies the path to the input file.
     -   input.json is the file that contains the input data to be
          scanned by Tirith.
 
--   **-policy-path policy.json**:
-    -   The -policy-path option specifies the path to the policy file.
+-   `-policy-path policy.json`:
+    -   The `-policy-path option` specifies the path to the policy file.
     -   policy.json is the file that contains the policies (rules)
          defined in Tirith\'s policy as code.
 
@@ -1228,30 +1229,6 @@ Final expression used:
 ```
 
 
-### Error tolerance
-
-What if sometimes one or more keys inside the input file are not found?
-Let's try to delete the **verb** key inside the **input.json** and see
-what happens when we try to run the evaluation again using the same
-command above.
-
-It should fail the evaluation.
-
-What if we, as a user, want the evaluator to "skips" itself (don't
-include the result to the final evaluator) when a particular key is not
-found?
-
-This is when **error tolerance** can be helpful.
-
-A provider can raise an error and the error itself has a **severity**
-value. (see Appendix). In this case the JSON provider raises an error of
-severity value 2 when the `get_value` operation can't find the JSON
-path inside the input.
-
-By setting the **error_tolerance** value to 2 or more inside the
-**condition** key in the evaluator, it will mark the evaluator as Skipped instead of Failed.
-
-
 ## Want to contribute?
 
 If you're interested, please email us at team[at]stackguardian.io or get started by reading the [contributing.md](./CONTRIBUTING.md).