add latest uberenv, license and update readme

LICENSE

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+Copyright (c) 2014-2018, Lawrence Livermore National Security, LLC.
+
+Produced at the Lawrence Livermore National Laboratory
+
+LLNL-CODE-666778
+
+All rights reserved.
+
+This file is part of Conduit. 
+
+For details, see: http://software.llnl.gov/conduit/.
+
+Please also read conduit/LICENSE
+
+Redistribution and use in source and binary forms, with or without 
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, 
+  this list of conditions and the disclaimer below.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the disclaimer (as noted below) in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name of the LLNS/LLNL nor the names of its contributors may
+  be used to endorse or promote products derived from this software without
+  specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL SECURITY,
+LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+DAMAGES  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
+STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
+POSSIBILITY OF SUCH DAMAGE.
+
+Additional BSD Notice
+
+ 1. This notice is required to be provided under our contract with the U.S.
+    Department of Energy (DOE). This work was produced at Lawrence 
+    Livermore National Laboratory under Contract No. DE-AC52-07NA27344 with
+    the DOE.
+
+ 2. Neither the United States Government nor Lawrence Livermore National
+    Security, LLC nor any of their employees, makes any warranty, express
+    or implied, or assumes any liability or responsibility for the 
+    accuracy, completeness, or usefulness of any information, apparatus, 
+    product, or process disclosed, or represents that its use would not
+    infringe privately-owned rights.
+
+ 3. Also, reference herein to any specific commercial products, process,
+    or services by trade name, trademark, manufacturer or otherwise does
+    not necessarily constitute or imply its endorsement, recommendation,
+    or favoring by the United States Government or Lawrence Livermore 
+    National Security, LLC. The views and opinions of authors expressed
+    herein do not necessarily state or reflect those of the United 
+    States Government or Lawrence Livermore National Security, LLC, and
+    shall not be used for advertising or product endorsement purposes.
+

README.md

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 # uberenv
-Automates using spack to build and deploy software
+Automates using spack to build and deploy software.
+
+Uberenv is a short pyton script that helps automate using spack to build
+third-party dependencies for development and to deploy spack packages. 
+
+Uberenv was released as part of the Conduit (https://github.com/LLNL/conduit/). It is included in-source in several projects, this repo is used to hold the latest reference version.
+
+We do not have separate docs for uberenv yet, however you can read some details about how it is used in Conduit's documentation:
+
+https://llnl-conduit.readthedocs.io/en/latest/building.html#building-conduit-and-third-party-dependencies
+
+Conduit's source repo also serves as an example for uberenv and spack configuration files, etc:
+
+https://github.com/LLNL/conduit/tree/master/scripts/uberenv