added support for Travis builds

.Rbuildignore

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+^.*\.Rproj$
+^\.Rproj\.user$
+.travis.yml
+local

.travis.yml

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+# Sample .travis.yml for R projects.
+# Taken from my fork of Craig Citro's r-travis
+#
+# See https://github.com/eddelbuettel/r-travis/
+# and https://github.com/craigcitro/r-travis
+#
+# See README.md for instructions.
+
+language: c
+
+env:
+  global:
+    - _R_CHECK_FORCE_SUGGESTS_=FALSE
+
+before_install:
+  - curl -OL http://raw.github.com/craigcitro/r-travis/master/scripts/travis-tool.sh
+  - chmod 755 ./travis-tool.sh
+  - ./travis-tool.sh bootstrap
+
+install:
+  ## -- nothing to do here
+  ## - ./travis-tool.sh install_r 
+
+script: ./travis-tool.sh run_tests
+
+notifications:
+  email:
+    on_success: change
+    on_failure: change
+

README.md

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+# bh: Boost Headers for R 
+
+[![Build Status](https://travis-ci.org/eddelbuettel/bh.png)](https://travis-ci.org/eddelbuettel/bh)
+
+## About
+
+This package provides [R](http://www.r-project.org) with access to
+[Boost](http://www.boost.org/) header files.  [Boost](http://www.boost.org/)
+provides free peer-reviewed portable C++ source libraries.  A large part of
+[Boost](http://www.boost.org/) is provided as C++ template code which is
+resolved entirely at compile-time without linking.  
+
+This package aims to provide the most useful subset of
+[Boost](http://www.boost.org/) libraries for template use among CRAN
+package. By placing these libraries in this package, we offer a more
+efficient distribution system for CRAN as replication of this code in the
+sources of other packages is avoided.
+
+It can be used via the `LinkingTo:` field in the `DESCRIPTION` field of an R
+package --- and the R package infrastructure tools will then know how to set
+include flags correctly on all architectures supported by R.
+
+Not that this can be used solely by headers-only Boost libraries. This
+covers most of Boost, but excludes some libraries which require linking for
+parts or all of their functionality. 
+
+## Authors 
+
+Dirk Eddelbuettel, Jay Emerson and Michael Kane
+
+## License
+
+This package is provided under the same license as Boost itself, the BSL-1.0