Update README for v0.3.0

Author: andrewkroh

README.md

@@ -8,15 +8,15 @@ shells.
 
 bash:
 
-`eval "$(gvm 1.15.5)"`
+`eval "$(gvm 1.15.6)"`
 
 cmd.exe (for batch scripts `%i` should be substituted with `%%i`):
 
-`FOR /f "tokens=*" %i IN ('"gvm.exe" 1.15.5') DO %i`
+`FOR /f "tokens=*" %i IN ('"gvm.exe" 1.15.6') DO %i`
 
 powershell:
 
-`gvm --format=powershell 1.15.5 | Invoke-Expression`
+`gvm --format=powershell 1.15.6 | Invoke-Expression`
 
 Installation
 ------------
@@ -31,34 +31,34 @@ Linux:
 
 ``` bash
 # Linux Example (assumes ~/bin is in PATH).
-curl -sL -o ~/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.2.4/gvm-linux-amd64
+curl -sL -o ~/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.3.0/gvm-linux-amd64
 chmod +x ~/bin/gvm
-eval "$(gvm 1.15.5)"
+eval "$(gvm 1.15.6)"
 go version
 ```
 
 macOS:
 
 ``` bash
 # macOS Example
-curl -sL -o /usr/local/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.2.4/gvm-darwin-amd64
+curl -sL -o /usr/local/bin/gvm https://github.com/andrewkroh/gvm/releases/download/v0.3.0/gvm-darwin-amd64
 chmod +x /usr/local/bin/gvm
-eval "$(gvm 1.15.5)"
+eval "$(gvm 1.15.6)"
 go version
 ```
 
 Windows (Powershell):
 
 ```
 [Net.ServicePointManager]::SecurityProtocol = "tls12"
-Invoke-WebRequest -URI https://github.com/andrewkroh/gvm/releases/download/v0.2.4/gvm-windows-amd64.exe -Outfile C:\Windows\System32\gvm.exe
-gvm --format=powershell 1.15.5 | Invoke-Expression
+Invoke-WebRequest -URI https://github.com/andrewkroh/gvm/releases/download/v0.3.0/gvm-windows-amd64.exe -Outfile C:\Windows\System32\gvm.exe
+gvm --format=powershell 1.15.6 | Invoke-Expression
 go version
 ```
 
 Fish Shell:
 
-Use `gvm` with fish shell by executing `gvm 1.15.5 | source` in lieu of using `eval`.
+Use `gvm` with fish shell by executing `gvm 1.15.6 | source` in lieu of using `eval`.
 
 For existing Go users: