update the tutorial of installation

Author: QingfeiPan

docs/docs/installation/installation.md

@@ -1,52 +1,53 @@
----
-layout: default
-title:  Installation
-nav_order: 2
-permalink: /docs/installation
----
-
-## Installation
-
-### Dependencies
-
-R, version >= 3.6.0
-
-[Pre-request R packages](docs/pre_request)
-
-
-### Install a released R package
-
-Download a released version from [https://github.com/jyyulab/NetBID/releases](https://github.com/jyyulab/NetBID/releases) and run:
-
-```R
-devtools::install_local('NetBID2_2.0.2.tar.gz')
-```
-
-### Install from github master branch
-
-```R
-# set repos, for R version 3.6.0, Bioconductor version 3.9
-local({
-  r <- getOption("repos")
-  r["CRAN"] <- "https://cran.rstudio.com/"
-  r["BioCsoft"] <- "https://bioconductor.org/packages/3.9/bioc"
-  r["BioCann"] <- "https://bioconductor.org/packages/3.9/data/annotation"
-  r["BioCexp"] <- "https://bioconductor.org/packages/3.9/data/experiment"
-  options(repos = r)
-})
-```
-
-Install without cloning the repository
-
-```R
-devtools::install_github("jyyulab/NetBID",ref='master',dependencies='Depends') 
-```
-
-Or clone the repository and install locally:
-
-```R
-devtools::install(pkg='.',dependencies=TRUE) ## Install the package with dependencies.
-devtools::install_deps(pkg = ".", dependencies = TRUE) ## Install package dependencies if needed.
-```
-
----
+---
+layout: default
+title:  Installation
+nav_order: 2
+permalink: /docs/installation
+---
+
+## Installation
+
+### Dependencies
+
+R, version >= 3.6.0
+
+[Pre-request R packages](docs/pre_request)
+
+
+### Install a released R package
+
+Download a released version from [https://github.com/jyyulab/NetBID/releases](https://github.com/jyyulab/NetBID/releases) and run:
+
+```R
+devtools::install_local('NetBID2_2.0.2.tar.gz')
+```
+
+### Install from github master branch
+
+```R
+# set repos, for R version 3.6.0, Bioconductor version 3.9
+local({
+  r <- getOption("repos")
+  r["CRAN"] <- "https://cran.rstudio.com/"
+  r["BioCsoft"] <- "https://bioconductor.org/packages/3.9/bioc"
+  r["BioCann"] <- "https://bioconductor.org/packages/3.9/data/annotation"
+  r["BioCexp"] <- "https://bioconductor.org/packages/3.9/data/experiment"
+  options(repos = r)
+})
+```
+
+Install without cloning the repository
+
+```R
+devtools::install_github("jyyulab/NetBID",ref='master',dependencies='Depends') 
+devtools::install_github("jyyulab/NetBID") 
+```
+
+Or clone the repository and install locally:
+
+```R
+devtools::install(pkg='.',dependencies=TRUE) ## Install the package with dependencies.
+devtools::install_deps(pkg = ".", dependencies = TRUE) ## Install package dependencies if needed.
+```
+
+---