Legal document updates.

Signed-off-by: Simeon H.K. Fitch <fitch@astraea.io>

CONTRIBUTING.md

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+# Contributing to RasterFrames
+
+Thanks for your interest in this project.
+
+## Project Description
+
+LocationTech RasterFrames brings the power of Spark DataFrames to geospatial
+raster data, empowered by the map algebra and tile layer operations of
+GeoTrellis. The underlying purpose of RasterFrames is to allow data scientists
+and software developers to process and analyze geospatial-temporal raster data
+with the same flexibility and ease as any other Spark Catalyst data type. At its
+core is a user-defined type (UDT) called TileUDT, which encodes a GeoTrellis
+Tile in a form the Spark Catalyst engine can process. Furthermore, we extend the
+definition of a DataFrame to encompass some additional invariants, allowing for
+geospatial operations within and between RasterFrames to occur, while still
+maintaining necessary geo-referencing constructs.
+
+ * https://projects.eclipse.org/projects/locationtech.rasterframes
+
+## Eclipse Contributor Agreement
+
+Before your contribution can be accepted by the project team contributors must
+electronically sign the Eclipse Contributor Agreement (ECA).
+
+ * http://www.eclipse.org/legal/ECA.php
+
+Commits that are provided by non-committers must have a Signed-off-by field in
+the footer indicating that the author is aware of the terms by which the
+contribution has been provided to the project. The non-committer must
+additionally have an Eclipse Foundation account and must have a signed Eclipse
+Contributor Agreement (ECA) on file.
+
+For more information, please see the Eclipse Committer Handbook:
+https://www.eclipse.org/projects/handbook/#resources-commit
+
+## Developer Resources
+
+The RasterFrames source code is hosted on GitHub:
+
+ * https://github.com/locationtech/rasterframes
+
+Issues should be submitted via GitHub issues:
+
+ * https://github.com/locationtech/rasterframes/issues
+
+A user manual may be found here:
+
+ * http://rasterframes.io
+
+## Building
+
+RasterFrames uses [sbt](https://www.scala-sbt.org/) as its build tool. Standard build
+commands are as follows:
+
+* Compile: `sbt compile`
+* Install packages locally: `sbt publishLocal`
+* Run tests: `sbt test`
+* Build documentation: `sbt makeSite`
+* Spark shell with RasterFrames initialized: `sbt console`
+
+
+## Contribution Process
+
+RasterFrames uses GitHub pull requests (PRs) for accepting contributions. 
+Please fork the repository, create a branch, and submit a PR based off the `master` branch.
+During the PR review process comments may be attached. Please look out for comments
+and respond as necessary.
+
+
+## Contact
+
+Help, questions and community dialog are supported via Gitter:
+
+ * https://gitter.im/s22s/raster-frames
+
+Commercial support is available by writing to info@astraea.earth

LICENSE

@@ -14,3 +14,4 @@ WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 License for the specific language governing permissions and limitations under
 the License.
 
+SPDX-License-Identifier: Apache-2.0

NOTICE.md

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+# Notices for RasterFrames
+
+This content is produced and maintained by the LocationTech RasterFrames project.
+
+ * Project home: https://projects.eclipse.org/projects/locationtech.rasterframes
+
+## Trademarks
+
+LocationTech RasterFrames, RasterFrames, and the RasterFrames logo are trademarks for the Eclipse Foundation.
+
+## Declared Project Licenses
+
+This program and the accompanying materials are made available under the terms of the Apache License, Version 2.0 
+which is available at https://www.apache.org/licenses/LICENSE-2.0.
+
+SPDX-License-Identifier: Apache-2.0
+
+## Source Code
+
+The project maintains the following source code repository:
+
+ * https://github.com/locationtech/rasterframes
+
+## Third-party Content
+
+LocationTech GeoTrelllis (1.2.0)
+
+ * License: Apache License, 2.0
+ * Project: https://github.com/locationtech/geotrellis
+ * Source: https://github.com/locationtech/geotrellis/tree/1.2
+
+LocationTech GeoMesa (2.0.0-m.1)
+
+ * License: Apache License, 2.0
+ * Project: https://github.com/locationtech/geomesa
+ * Source: https://github.com/locationtech/geomesa/releases/tag/geomesa_2.11-2.0.0-m.1
+
+shapeless (2.3.2)
+
+ * License: Apache License, 2.0
+ * Project: https://github.com/milessabin/shapeless
+ * Source: https://github.com/milessabin/shapeless/releases/tag/shapeless-2.3.2
+
+## Cryptography
+
+Content may contain encryption software. The country in which you are currently
+may have restrictions on the import, possession, and use, and/or re-export to
+another country, of encryption software. BEFORE using any encryption software,
+please check the country's laws, regulations and policies concerning the import,
+possession, or use, and re-export of encryption software, to see if this is
+permitted.