Add initial Travis CI configuration

Closes #63
Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NBen Laurie <ben@openssl.org>

.travis.yml

+language: c
+
+os:
+ - linux
+ - osx
+
+compiler:
+ - clang
+ - gcc
+
+env:
+ - CONFIG_OPTS=""
+ - CONFIG_OPTS="--debug"
+ - CONFIG_OPTS="shared"
+
+script:
+ - ./config $CONFIG_OPTS && make && make test
+
+notifications:
+  recipient:
+   - openssl-dev@openssl.org
+  email:
+    on_success: change
+    on_failure: always