Update javadocs README with proxy info. Add some eclipse setting files to .gitignore

.gitignore

@@ -22,3 +22,5 @@ node/
 *.swp
 .gradle/
 build/
+.project
+.settings/

javadocs/README.md

@@ -15,3 +15,26 @@ When building locally against SNAPSHOT, you can generate the `sources.jar` for
 $ mvn install  -Psources
 $ cd javadocs ; mvn generate-sources
 ```
+
+## Resolving links behind proxy
+
+If you are behind a proxy and get errors from javadoc that it can't
+resolve links then you need to pass your proxy settings to javadoc.
+One easy way to do this is to use the `JAVA_TOOL_OPTIONS` environment
+variable to set the http proxy Java system properties.
+
+If you've already set these system properties in `MAVEN_OPTS`:
+
+```bash
+echo $MAVEN_OPTS
+-Dhttp.proxyHost=yourproxy.com -Dhttp.proxyPort=80
+-Dhttp.nonProxyHosts=127.0.0.1|localhost|yourdomain.com
+-Dhttps.proxyHost=yourproxy.com -Dhttps.proxyPort=80
+-Dhttps.nonProxyHosts=127.0.0.1|localhost|yourdomain.com
+```
+
+then you can just do:
+
+```bash
+export JAVA_TOOL_OPTIONS="${MAVEN_OPTS}"
+```