Fixed init bug and bumped version.

pyproject.toml

@@ -1,10 +1,9 @@
 [tool.poetry]
 name = "renv"
-version = "0.3.0"
+version = "0.3.1"
 license = "MIT"
-description = """The renv package is a CLI tool for creating environments for the R statistical programming
-language.  It takes advantage of the python venv module and its modular EnvBuilder class."""
-authors = ["Rob Gilmore <[email protected]>", "Shaurita Hutchins <[email protected]>", "Santina Lin <[email protected]>"]
+description = """The renv package is a CLI tool for creating environments for the R statistical programming language.  It takes advantage of the python venv module and its modular EnvBuilder class."""
+authors = ["Rob Gilmore <[email protected]>", "Santina Lin <[email protected]>", "Shaurita Hutchins <[email protected]>"]
 readme = "README.md"
 repository = "https://github.com/datasnakes/renv"
 keywords = ["R", "virtual", "environment", "reproducible", "statistics"]

renv/renv.py

@@ -3,10 +3,10 @@
 
 
 @click.group(invoke_without_command=True)
-@click.option('--r_home', '-r', default=None, required=True,
+@click.option('--r_home', '-r', default=None,
               help="Provide the root of the directory tree where R is installed ($R_HOME).  This would be R's "
                    "installation directory when using ./configure --prefix=<r_home>.")
-@click.option('--env_name', '-e', default=None, required=True,
+@click.option('--env_name', '-e', default=None,
               help="Name of the environment.")
 @click.option("--path", "-p", default="~/.beRi",
               help="An absolute installation path for renv.", show_default=True)
@@ -40,14 +40,20 @@ def renv(ctx, r_home, env_name, path, name, bindir, libdir, includedir, recommen
     if path != "~/.beRi":
         raise NotImplementedError("Renv only supports installing into the home directory at this time.")
 
+
     venvR = get_system_venv()
     ctx.obj['venvR'] = venvR
-    builder = venvR(env_name=env_name, path=path, name=name, r_home=r_home, recommended_packages=recommended_packages,
-          clear=clear, upgrade=upgrade, prompt=prompt, verbose=verbose, bindir=bindir, libdir=libdir,
-          rincludedir=includedir)
-    env_bin = builder.build_venv()
-    click.secho("To activate: source " + env_bin+ "/activate",
-               fg="green")
+    if env_name and r_home:
+        builder = venvR(env_name=env_name, path=path, name=name, r_home=r_home, recommended_packages=recommended_packages,
+              clear=clear, upgrade=upgrade, prompt=prompt, verbose=verbose, bindir=bindir, libdir=libdir,
+              rincludedir=includedir)
+        env_bin = builder.build_venv()
+        click.secho("To activate: source " + env_bin+ "/activate",
+                   fg="green")
+    elif env_name is None and init is None:
+        click.secho("Missing -e/--env_name parameter", fg="red")
+    elif r_home is None and init is None:
+        click.secho("Missing -r/--r_home parameter", fg="red")
 @renv.command(help="Initialize renv using the <path>/<name>.")
 @click.pass_context
 def init(ctx):