Added some new dependencies to the README
Added some new dependencies to the README

Since I was building kudu from a clean install of Ubuntu 14.04, I found out
that there were some missing packages that are not included by default in the
system yet are assumed to exist during the building process.

The ones that were needed but not present were curl, liboath-dev, and g++.

Change-Id: I1142a4c3c59ca7dd1524bcdf32bba5eec8767cf4
Reviewed-on: http://gerrit.sjc.cloudera.com:8080/5582
Reviewed-by: Todd Lipcon <2c763d726a8c2f6afda9be7e0e56a2caa6bb5e6b@cloudera.com>
Tested-by: jenkins

cloudera/kudu,EvilMcJerkface/kudu,andrwng/kudu,cloudera/kudu,helifu/kudu,helifu/kudu,helifu/kudu,andrwng/kudu,InspurUSA/kudu,andrwng/kudu,InspurUSA/kudu,InspurUSA/kudu,cloudera/kudu,andrwng/kudu,cloudera/kudu,helifu/kudu,EvilMcJerkface/kudu,cloudera/kudu,EvilMcJerkface/kudu,cloudera/kudu,cloudera/kudu,andrwng/kudu,EvilMcJerkface/kudu,helifu/kudu,InspurUSA/kudu,InspurUSA/kudu,EvilMcJerkface/kudu,andrwng/kudu,helifu/kudu,EvilMcJerkface/kudu,EvilMcJerkface/kudu,andrwng/kudu,InspurUSA/kudu,cloudera/kudu,EvilMcJerkface/kudu,InspurUSA/kudu,EvilMcJerkface/kudu,cloudera/kudu,helifu/kudu,helifu/kudu,helifu/kudu,andrwng/kudu,andrwng/kudu,InspurUSA/kudu,InspurUSA/kudu