[CONTRIBUTORS.md] added @jdw1996 to contributors list

docs/CONTRIBUTORS.md

@@ -12,7 +12,14 @@
 - Werner Lemberg
 - Chris Simpkins
 
-### Extended Set Design and Proofing
+### Basic Latin Set Revisions and Testing
+
+- JM
+- Chris Simpkins
+- David van Gemeren
+- Joseph Winters
+
+### Extended Set Revisions and Testing
 
 - JM - all sets
 - Dmitry Maslennikov - Cyrillic set
@@ -33,7 +40,7 @@
 - @rafaeln - Kĩsêdjê set
 - @xstee (Leonid) - Cyrillic set
 
-### Powerline Glyph Set Design and Proofing
+### Powerline Glyph Set Revisions and Testing
 
 - Carlo Abelli
 - Justin Anderson
@@ -58,7 +65,7 @@
 
 - Chris Simpkins
 
-### Windows Development
+### Windows Installation & Testing
 
 - Michael "Tex" Hex