Modify READMEs for R installation (#63)

* Update repo from which RODBCext is found

* Add tar.gz for linux

* fix READMEs for RODBCext

* remove titling

* add extra space

R/README.md

@@ -4,9 +4,10 @@ sqlmlutils is an R package to help execute R code on a SQL database (SQL Server
 
 # Installation
 
+### Windows
 From command prompt, run 
 ```
-R.exe -e "install.packages('RODBCext', repos='https://cran.microsoft.com')"
+R.exe -e "install.packages('RODBCext', repos='https://mran.microsoft.com/snapshot/2019-02-01/')"
 R.exe CMD INSTALL dist/sqlmlutils_0.7.1.zip
 ```
 OR
@@ -15,6 +16,12 @@ To build a new package file and install, run
 .\buildandinstall.cmd
 ```
 
+### Linux
+```
+R.exe -e "install.packages('RODBCext', repos='https://mran.microsoft.com/snapshot/2019-02-01/')"
+R.exe CMD INSTALL dist/sqlmlutils_0.7.1.tar.gz
+```
+
 # Getting started
 
 Shown below are the important functions sqlmlutils provides:

README.md

@@ -23,9 +23,24 @@ pip install Python/dist/sqlmlutils-1.0.0.zip
 ```
 
 R:
+
+Windows:
+
+From command prompt, run 
 ```
-R -e "install.packages('RODBCext', repos='https://cran.microsoft.com')"
-R CMD INSTALL R/dist/sqlmlutils_0.7.1.zip
+R.exe -e "install.packages('RODBCext', repos='https://mran.microsoft.com/snapshot/2019-02-01/')"
+R.exe CMD INSTALL dist/sqlmlutils_0.7.1.zip
+```
+OR
+To build a new package file and install, run
+```
+.\buildandinstall.cmd
+```
+
+Linux
+```
+R.exe -e "install.packages('RODBCext', repos='https://mran.microsoft.com/snapshot/2019-02-01/')"
+R.exe CMD INSTALL dist/sqlmlutils_0.7.1.tar.gz
 ```
 
 # Details