Updated Google Summer of Code 2016 (markdown)

Google-Summer-of-Code-2016.md

@@ -48,6 +48,8 @@ Remember: we want you to succeed and we'd like you to stick around.
 
 # Ideas
 
+This is a list of larger tasks which we have on our roadmap, and which we feel are well suited for GSoC projects.
+
 ## Move to App Lock Mechanism
 **Brief explanation:**
 
@@ -128,7 +130,9 @@ Remember: we want you to succeed and we'd like you to stick around.
 **Contact:** [Mailinglist](http://groups.google.com/d/forum/openpgp-keychain-dev) or over XMPP (Jabber-ID: dominik@dominikschuermann.de)
 
 
-# Smaller Ideas
+# Secondary Ideas
+
+This is a list of smaller tasks, which we expect to take one or two weeks at most. We encourage students to pick one of these along with their main task in their proposal, because after several weeks of working on one task it can be refreshing to just do something different for a while.
 
 ## Improved Yubikey Import
 **Brief explanation:**
@@ -176,3 +180,19 @@ Remember: we want you to succeed and we'd like you to stick around.
 **Mentor:** Vincent Breitmoser / Adithya Philip
 
 **Contact:** [Mailinglist](http://groups.google.com/d/forum/openpgp-keychain-dev) or over XMPP (Jabber-ID: dominik@dominikschuermann.de)
+
+
+## Deterministic Builds
+**Brief explanation:**
+
+**Expected results:** 
+
+**Priority:** 
+
+**Knowledge Prerequisite:** Java programming
+
+**Skill level:** medium
+
+**Mentor:** Vincent Breitmoser / Adithya Philip
+
+**Contact:** [Mailinglist](http://groups.google.com/d/forum/openpgp-keychain-dev) or over XMPP (Jabber-ID: dominik@dominikschuermann.de)