Add common option "-V, --vendor" to work with vendor directory

1 files changed, 29 insertions, 22 deletions

diff --git a/README.md b/README.md
index d485bb0..013fd42 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # Beku
 
-Beku is a library and program to manage packages in `$GOPATH`.
+Beku is a library and program to manage packages in user's environment (GOPATH
+or vendor directory).
 
 For beku as library see the following
 [![GoDoc](https://godoc.org/github.com/shuLhan/beku?status.svg)](https://godoc.org/github.com/shuLhan/beku).
@@ -11,16 +12,16 @@ For beku as program see the below documentation or at
 
 # Beku program
 
-Beku is command line program to manage packages in $GOPATH. Beku provide
-syntax like `pacman`.
+Beku is command line program to manage packages in user's environment (GOPATH
+or vendor directory). Beku provide syntax like `pacman`.
 
 Beku read and write the package database into a file named "beku.db".
 
 At first execution, beku will try to open the package database in current
 directory. If no file found, it will try to open
-"$GOPATH/var/beku/beku.db". When both locations does not provide
-package database, beku will scan entire "$GOPATH/src" and write the
-package database into "$GOPATH/var/beku/beku.db".
+"{prefix}/var/beku/beku.db". When both locations does not provide
+package database, beku will scan entire "{prefix}/src" and write the
+package database into "{prefix}/var/beku/beku.db".
 
 ## Global Options
 
@@ -29,15 +30,21 @@ package database into "$GOPATH/var/beku/beku.db".
 No confirmation will be asked on any operation. Useful when running beku
 inside a script.
 
+	-V, --vendor
+
+Operate in vendor mode.  This option used only when first scanning
+(`beku -V -S`).
+Any operation after that, will use the "vendor" directory in current
+working directory as installation prefix.
 
 ## Freeze Operation
 
      -B, --freeze
 
-Operate on the package database and GOPATH. This operation will ensure that
-all packages listed on database file is installed with their specific
-version on GOPATH.  Also, all packages that are not registered will be
-removed from GOPATH "src" and "pkg" directories.
+Operate on the package database and user's environment. This operation will
+ensure that all packages listed on database file is installed with their
+specific version.  Also, all packages that are not registered will
+be removed from "src" and "pkg" directories.
 
 
 ## Database Operation
@@ -72,7 +79,7 @@ Query the package database.
 
 	-R, --remove [pkg]
 
-Remove package from GOPATH, including source and installed binaries and
+Remove package from environment, including source and installed binaries and
 archives.
 
 ### Options
@@ -86,16 +93,16 @@ packages.
 
 	$ beku -R github.com/shuLhan/beku
 
-Remove package "github.com/shuLhan/beku" source in "$GOPATH/src",
-their installed binaries in "$GOPATH/bin", and their installed archives on
-"$GOPATH/pkg/{GOOS}_{GOARCH}".
+Remove package "github.com/shuLhan/beku" source in "{prefix}/src",
+their installed binaries in "{prefix}/bin", and their installed archives on
+"{prefix}/pkg/{GOOS}_{GOARCH}".
 
 	$ beku -R github.com/shuLhan/beku --recursive
 	$ beku -Rs github.com/shuLhan/beku
 
-Remove package "github.com/shuLhan/beku" source in "$GOPATH/src",
-their installed binaries in "$GOPATH/bin", their installed archives on
-"$GOPATH/pkg/{GOOS}_{GOARCH}", and all their dependencies.
+Remove package "github.com/shuLhan/beku" source in "{prefix}/src",
+their installed binaries in "{prefix}/bin", their installed archives on
+"{prefix}/pkg/{GOOS}_{GOARCH}", and all their dependencies.
 
 
 ## Sync Operation
@@ -103,7 +110,7 @@ their installed binaries in "$GOPATH/bin", their installed archives on
 	-S, --sync <pkg[@version]>
 
 Synchronizes package. Given a package import path, beku will try to clone
-the package into GOPATH source directory and set the package version to
+the package into source directory and set the package version to
 latest the tag. If no tag found, it will use the latest commit on master
 branch. A specific version can be set using "@version" suffix.
 
@@ -129,23 +136,23 @@ confirmation before upgrade.
 
 	$ beku -S golang.org/x/text
 
-Download package `golang.org/x/text` into `$GOPATH/src/golang.org/x/text`,
+Download package `golang.org/x/text` into `{prefix}/src/golang.org/x/text`,
 and set their version to the latest commit on branch master.
 
 	$ beku -S github.com/golang/text --into golang.org/x/text
 
 Download package `github.com/golang/text` into
-`$GOPATH/src/golang.org/x/text`, and set their version to the latest commit
+`{prefix}/src/golang.org/x/text`, and set their version to the latest commit
 on branch master.
 
 	$ beku -S golang.org/x/text@v0.3.0
 
-Download package `golang.org/x/text` into `$GOPATH/src/golang.org/x/text`
+Download package `golang.org/x/text` into `{prefix}/src/golang.org/x/text`
 and checkout the tag `v0.3.0` as the working version.
 
 	$ beku -S golang.org/x/text@5c1cf69
 
-Download package `golang.org/x/text` into `$GOPATH/src/golang.org/x/text`
+Download package `golang.org/x/text` into `{prefix}/src/golang.org/x/text`
 and checkout the commit `5c1cf69` as the working version.
 
         $ beku -Su