Added Evernote and Yammer APIs

src/main/java/org/scribe/builder/api/EvernoteApi.java

@@ -0,0 +1,18 @@
+package org.scribe.builder.api;
+
+public class EvernoteApi extends DefaultApi10a
+{
+
+	@Override
+	public String getRequestTokenEndpoint()
+  {
+		return "https://www.evernote.com/oauth";
+	}
+
+	@Override
+	public String getAccessTokenEndpoint()
+  {
+		return "https://www.evernote.com/oauth";
+	}
+
+}

src/main/java/org/scribe/builder/api/YammerApi.java

@@ -0,0 +1,17 @@
+package org.scribe.builder.api;
+
+public class YammerApi extends DefaultApi10a {
+
+	@Override
+	public String getRequestTokenEndpoint()
+  {
+		return "https://www.yammer.com/oauth/request_token";
+	}
+
+	@Override
+	public String getAccessTokenEndpoint()
+  {
+		return "https://www.yammer.com/oauth/access_token";
+	}
+
+}