update README

Author: kevinushey

README.md

@@ -1,25 +1,28 @@
-## RcppParallel Package
+
+## RcppParallel
 
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-[![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/RcppParallel)](https://cran.r-project.org/package=RcppParallel)
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-High level functions for doing parallel programming with Rcpp. For example, the `parallelFor` function can be used to convert the work of a standard serial "for" loop into a parallel one and the `parallelReduce` function can be used for accumulating aggregate or other values.
+High level functions for parallel programming with Rcpp. The `parallelFor()` function can be used to convert the work of a standard serial "for" loop into a parallel one, and the `parallelReduce()` function can be used for accumulating aggregate or other values.
 
-The high level interface enables safe and robust parallel programming without direct manipulation of operating system threads. On Windows, OS X, and Linux systems the underlying implementation is based on [Intel TBB](https://www.threadingbuildingblocks.org/) (Threading Building Blocks). On other platforms a less-performant fallback implementation based on the [TinyThread](http://tinythreadpp.bitsnbites.eu/) library is used.
+The high level interface enables safe and robust parallel programming without direct manipulation of operating system threads. On Windows, OS X, and Linux systems, the underlying implementation is based on [Intel TBB](https://www.threadingbuildingblocks.org/) (Threading Building Blocks). On other platforms, a less-performant fallback implementation based on the [TinyThread](http://tinythreadpp.bitsnbites.eu/) library is used.
 
 For additional documentation on using RcppParallel see the package website at http://rcppcore.github.io/RcppParallel/.
 
+
 ### Intel TBB
 
-`RcppParallel` now supports the new interface of Intel TBB and allows using external library (e.g., with [`oneTBB`](https://github.com/oneapi-src/oneTBB) or the system TBB library), using `TBB_LIB` and `TBB_INC` environment variables.
+`RcppParallel` supports the new interface of Intel TBB, and can be configured to use an external copy of TBB (e.g., with [`oneTBB`](https://github.com/oneapi-src/oneTBB) or the system TBB library), using the `TBB_LIB` and `TBB_INC` environment variables.
 
 To build the development version of `RcppParallel` with [`oneTBB`](https://github.com/oneapi-src/oneTBB):
 
 - Install [`oneTBB`](https://github.com/oneapi-src/oneTBB).
 
 For example, installing [`oneTBB`](https://github.com/oneapi-src/oneTBB) on Linux 64-bit (`x86_64`) to `$HOME` directory (change if needed!):
+
 ```bash
 TBB_VERSION="2021.1.1"
 
@@ -32,6 +35,7 @@ export TBB="$HOME/oneapi-tbb-$TBB_VERSION"
 - Set the TBB environment variables (specifically: `TBB` for the installation prefix, `TBB_INC` for the directory that includes the header files, and `TBB_LIB` for the libraries directory).
 
 For example, installing [`oneTBB`](https://github.com/oneapi-src/oneTBB) on Linux 64-bit (`x86_64`) to `$HOME` directory (change if needed!):
+
 ```bash
 source $TBB/env/vars.sh intel64
 
@@ -40,15 +44,17 @@ export TBB_LIB="$TBB/lib/intel64/gcc4.8"
 ```
 
 - Build the development version of `RcppParallel`:
+
 ```r
 install.packages("remotes")
-remotes::install_github("RcppCore/RcppParallel@develop", force = TRUE)
+remotes::install_github("RcppCore/RcppParallel")
 ```
 
+
 ### License
 
-The RcppParallel package is made available under the [GPLv2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html).
+The RcppParallel package is made available under the [GPLv2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) license.
 
-The TinyThread library is licensed under the [zlib/libpng](http://www.opensource.org/licenses/zlib-license.php) license as described [here](https://gitorious.org/tinythread/tinythreadpp/source/master:README.txt).
+The [TinyThread library](https://tinythreadpp.bitsnbites.eu/) is licensed under the [zlib/libpng](http://www.opensource.org/licenses/zlib-license.php) license.
 
-The Intel TBB Library is licensed under the Apache 2.0 (as described at https://www.threadingbuildingblocks.org/faq/10).
+The Intel TBB Library is licensed under the Apache 2.0 license, as described at https://github.com/oneapi-src/oneTBB/blob/master/LICENSE.txt.