update ChangeLog

Author: mrash

ChangeLog

@@ -1,3 +1,13 @@
+afl-cov-0.6.2 (12/26/2018):
+    - (Tim Strazzere) Add support for llvm-cov compiled binaries. Add a check
+      when ensuring the binary was instrumented with gcov to catch an llvm-cov
+      binary.
+    - Bug fix for number of args to logr(), found by github user @NimdaKey.
+      Fixes #38.
+    - Allow multi-spaces in --coverage-cmd, found by github user
+      @YourButterfly. Fixes #37.
+    - Add ToC to README.md.
+
 afl-cov-0.6.1 (11/27/2017):
     - (James Steele) Add the '--follow' command line argument which provides an
       option identical to that available on lcov that instructs the search for